diff --git a/libs/pyglet/__init__.py b/libs/pyglet/__init__.py
index df76348..de635af 100644
--- a/libs/pyglet/__init__.py
+++ b/libs/pyglet/__init__.py
@@ -329,6 +329,7 @@ class _ModuleProxy:
 # Lazily load all modules, except if performing
 # type checking or code inspection.
 if TYPE_CHECKING:
+    from . import animation
     from . import app
     from . import canvas
     from . import clock
@@ -349,6 +350,7 @@ if TYPE_CHECKING:
     from . import text
     from . import window
 else:
+    animation = _ModuleProxy('animation')
     app = _ModuleProxy('app')
     canvas = _ModuleProxy('canvas')
     clock = _ModuleProxy('clock')
diff --git a/libs/pyglet/animation.py b/libs/pyglet/animation.py
new file mode 100644
index 0000000..93fed35
--- /dev/null
+++ b/libs/pyglet/animation.py
@@ -0,0 +1,142 @@
+"""Animations
+
+Animations can be used by the :py:class:`~pyglet.sprite.Sprite` class in place
+of static images. They are essentially containers for individual image frames,
+with a duration per frame. They can be infinitely looping, or stop at the last
+frame. You can load Animations from disk, such as from GIF files::
+
+    ani = pyglet.resource.animation('walking.gif')
+    sprite = pyglet.sprite.Sprite(img=ani)
+
+Alternatively, you can create your own Animations from a sequence of images
+by using the :py:meth:`~Animation.from_image_sequence` method::
+
+    images = [pyglet.resource.image('walk_a.png'),
+              pyglet.resource.image('walk_b.png'),
+              pyglet.resource.image('walk_c.png')]
+
+    ani = pyglet.image.Animation.from_image_sequence(images, duration=0.1, loop=True)
+
+You can also use an :py:class:`pyglet.image.ImageGrid`, which is iterable::
+
+    sprite_sheet = pyglet.resource.image('my_sprite_sheet.png')
+    image_grid = pyglet.image.ImageGrid(sprite_sheet, rows=1, columns=5)
+
+    ani = pyglet.animation.Animation.from_image_sequence(image_grid, duration=0.1)
+
+In the above examples, all the Animation Frames have the same duration.
+If you wish to adjust this, you can manually create the Animation from a list of
+:py:class:`~AnimationFrame`::
+
+    image_a = pyglet.resource.image('walk_a.png')
+    image_b = pyglet.resource.image('walk_b.png')
+    image_c = pyglet.resource.image('walk_c.png')
+
+    frame_a = AnimationFrame(image_a, duration=0.1)
+    frame_b = AnimationFrame(image_b, duration=0.2)
+    frame_c = AnimationFrame(image_c, duration=0.1)
+
+    ani = pyglet.image.Animation(frames=[frame_a, frame_b, frame_c])
+
+"""
+
+from pyglet import clock as _clock
+from pyglet import event as _event
+
+
+class AnimationController(_event.EventDispatcher):
+
+    _frame_index: int = 0
+    _next_dt: float = 0.0
+    _paused: bool = False
+
+    _animation: 'Animation'
+
+    def _animate(self, dt):
+        """
+        Subclasses of AnimationController should provide their own
+        _animate method. This method should determine
+        """
+        raise NotImplementedError
+
+    @property
+    def paused(self) -> bool:
+        """Pause/resume the Animation."""
+        return self._paused
+
+    @paused.setter
+    def paused(self, pause):
+        if not self._animation or pause == self._paused:
+            return
+        if pause is True:
+            _clock.unschedule(self._animate)
+        else:
+            frame = self._animation.frames[self._frame_index]
+            self._next_dt = frame.duration
+            if self._next_dt:
+                _clock.schedule_once(self._animate, self._next_dt)
+        self._paused = pause
+
+    @property
+    def frame_index(self) -> int:
+        """The current AnimationFrame."""
+        return self._frame_index
+
+    @frame_index.setter
+    def frame_index(self, index):
+        # Bound to available number of frames
+        if self._animation is None:
+            return
+        self._frame_index = max(0, min(index, len(self._animation.frames)-1))
+
+
+AnimationController.register_event_type('on_animation_end')
+
+
+class Animation:
+    """Sequence of AnimationFrames.
+
+    If no frames of the animation have a duration of ``None``, the animation
+    loops continuously; otherwise the animation stops at the first frame with
+    duration of ``None``.
+
+    :Ivariables:
+        `frames` : list of `~pyglet.animation.AnimationFrame`
+            The frames that make up the animation.
+
+    """
+
+    __slots__ = 'frames'
+
+    def __init__(self, frames: list):
+        """Create an animation directly from a list of frames."""
+        assert len(frames)
+        self.frames = frames
+
+    def get_duration(self) -> float:
+        """Get the total duration of the animation in seconds."""
+        return sum([frame.duration for frame in self.frames if frame.duration is not None])
+
+    @classmethod
+    def from_sequence(cls, sequence: list, duration: float, loop: bool = True):
+        """Create an animation from a list of objects and a constant framerate."""
+        frames = [AnimationFrame(image, duration) for image in sequence]
+        if not loop:
+            frames[-1].duration = None
+        return cls(frames)
+
+    def __repr__(self):
+        return "Animation(frames={0})".format(len(self.frames))
+
+
+class AnimationFrame:
+    """A single frame of an animation."""
+
+    __slots__ = 'data', 'duration'
+
+    def __init__(self, data, duration):
+        self.data = data
+        self.duration = duration
+
+    def __repr__(self):
+        return f"AnimationFrame({self.data}, duration={self.duration})"
diff --git a/libs/pyglet/app/cocoa.py b/libs/pyglet/app/cocoa.py
index 4509f1c..5f1af49 100644
--- a/libs/pyglet/app/cocoa.py
+++ b/libs/pyglet/app/cocoa.py
@@ -1,26 +1,14 @@
 from pyglet.app.base import PlatformEventLoop
-from pyglet.libs.darwin import cocoapy
+from pyglet.libs.darwin import cocoapy, AutoReleasePool
 
 NSApplication = cocoapy.ObjCClass('NSApplication')
 NSMenu = cocoapy.ObjCClass('NSMenu')
 NSMenuItem = cocoapy.ObjCClass('NSMenuItem')
-NSAutoreleasePool = cocoapy.ObjCClass('NSAutoreleasePool')
 NSDate = cocoapy.ObjCClass('NSDate')
-NSDate.dateWithTimeIntervalSinceNow_.no_cached_return()
-NSDate.distantFuture.no_cached_return()
-
 NSEvent = cocoapy.ObjCClass('NSEvent')
 NSUserDefaults = cocoapy.ObjCClass('NSUserDefaults')
 
 
-class AutoReleasePool:
-    def __enter__(self):
-        self.pool = NSAutoreleasePool.alloc().init()
-        return self.pool
-
-    def __exit__(self, exc_type, exc_value, traceback):
-        self.pool.drain()
-        del self.pool
 
 
 def add_menu_item(menu, title, action, key):
@@ -33,8 +21,6 @@ def add_menu_item(menu, title, action, key):
         menu.addItem_(menuItem)
 
         # cleanup
-        title.release()
-        key.release()
         menuItem.release()
 
 
diff --git a/libs/pyglet/graphics/__init__.py b/libs/pyglet/graphics/__init__.py
index a365da3..972a126 100644
--- a/libs/pyglet/graphics/__init__.py
+++ b/libs/pyglet/graphics/__init__.py
@@ -5,53 +5,6 @@ Shaders and Buffers. It also provides classes for highly performant batched
 rendering and grouping.
 
 See the :ref:`guide_graphics` for details on how to use this graphics API.
-
-Batches and groups
-==================
-
-Developers can make use of :py:class:`~pyglet.graphics.Batch` and
-:py:class:`~pyglet.graphics.Group` objects to improve performance when
-rendering a large number of objects.
-
-The :py:class:`~pyglet.sprite.Sprite`, :py:func:`~pyglet.text.Label`,
-:py:func:`~pyglet.text.layout.TextLayout`, and other classes all accept a
-``batch`` and ``group`` parameter in their constructors. A Batch manages
-a set of objects that will be drawn all at once, and a Group can be used
-to set OpenGL state and further sort the draw operation.
-
-The following example creates a batch, adds two sprites to the batch, and then
-draws the entire batch::
-    
-    batch = pyglet.graphics.Batch()
-    car = pyglet.sprite.Sprite(car_image, batch=batch)
-    boat = pyglet.sprite.Sprite(boat_image, batch=batch)
-    
-    def on_draw():
-        batch.draw()
-
-Drawing a complete Batch is much faster than drawing the items in the batch
-individually, especially when those items belong to a common group.  
-
-Groups describe the OpenGL state required for an item. This is for the most
-part managed by the sprite, text, and other classes, however you can also use
-custom groups to ensure items are drawn in a particular order. For example, the
-following example adds a background sprite which is guaranteed to be drawn
-before the car and the boat::
-
-    batch = pyglet.graphics.Batch()
-    background = pyglet.graphics.Group(order=0)
-    foreground = pyglet.graphics.Group(order=1)
-
-    background = pyglet.sprite.Sprite(background_image, batch=batch, group=background)
-    car = pyglet.sprite.Sprite(car_image, batch=batch, group=foreground)
-    boat = pyglet.sprite.Sprite(boat_image, batch=batch, group=foreground)
-    
-    def on_draw():
-        batch.draw()
-
-It's preferable to manage pyglet objects within as few batches as possible. If
-the drawing of sprites or text objects need to be interleaved with other
-drawing that does not use the graphics API, multiple batches will be required.
 """
 
 import ctypes
@@ -255,15 +208,31 @@ def get_default_shader():
 
 
 class Batch:
-    """Manage a collection of vertex lists for batched rendering.
+    """Manage a collection of drawables for batched rendering.
 
-    Vertex lists are added to a :py:class:`~pyglet.graphics.Batch` using the
-    `add` and `add_indexed` methods. An optional group can be specified along
-    with the vertex list, which gives the OpenGL state required for its rendering.
-    Vertex lists with shared mode and group are allocated into adjacent areas of
-    memory and sent to the graphics card in a single operation.
+    Many drawable pyglet objects accept an optional `Batch` argument in their
+    constructors. By giving a `Batch` to multiple objects, you can tell pyglet
+    that you expect to draw all of these objects at once, so it can optimise its
+    use of OpenGL. Hence, drawing a `Batch` is often much faster than drawing
+    each contained drawable separately.
 
-    Call `VertexList.delete` to remove a vertex list from the batch.
+    The following example creates a batch, adds two sprites to the batch, and
+    then draws the entire batch::
+
+        batch = pyglet.graphics.Batch()
+        car = pyglet.sprite.Sprite(car_image, batch=batch)
+        boat = pyglet.sprite.Sprite(boat_image, batch=batch)
+
+        def on_draw():
+            batch.draw()
+
+    While any drawables can be added to a `Batch`, only those with the same
+    draw mode, shader program, and group can be optimised together.
+
+    Internally, a `Batch` manages a set of VertexDomains along with
+    information about how the domains are to be drawn. To implement batching on
+    a custom drawable, get your vertex domains from the given batch instead of
+    setting them up yourself.
     """
 
     def __init__(self):
@@ -325,6 +294,7 @@ class Batch:
         vertex_list.migrate(domain)
 
     def get_domain(self, indexed, mode, group, program, attributes):
+        """Get, or create, the vertex domain corresponding to the given arguments."""
         if group is None:
             group = ShaderGroup(program=program)
 
@@ -496,27 +466,43 @@ class Batch:
 class Group:
     """Group of common OpenGL state.
 
-    Before a VertexList is rendered, its Group's OpenGL state is set.
-    This includes binding textures, shaders, or setting any other parameters.
+    `Group` provides extra control over how drawables are handled within a
+    `Batch`. When a batch draws a drawable, it ensures its group's state is set;
+    this can include binding textures, shaders, or setting any other parameters.
+    It also sorts the groups before drawing.
+
+    In the following example, the background sprite is guaranteed to be drawn
+    before the car and the boat::
+
+        batch = pyglet.graphics.Batch()
+        background = pyglet.graphics.Group(order=0)
+        foreground = pyglet.graphics.Group(order=1)
+
+        background = pyglet.sprite.Sprite(background_image, batch=batch, group=background)
+        car = pyglet.sprite.Sprite(car_image, batch=batch, group=foreground)
+        boat = pyglet.sprite.Sprite(boat_image, batch=batch, group=foreground)
+
+        def on_draw():
+            batch.draw()
+
+    :Parameters:
+        `order` : int
+            Set the order to render above or below other Groups.
+            Lower orders are drawn first.
+        `parent` : `~pyglet.graphics.Group`
+            Group to contain this Group; its state will be set before this
+            Group's state.
+
+    :Variables:
+        `visible` : bool
+            Determines whether this Group is visible in any of the Batches
+            it is assigned to. If ``False``, objects in this Group will not
+            be rendered.
+        `batches` : list
+            Read Only. A list of which Batches this Group is a part of.
     """
     def __init__(self, order=0, parent=None):
-        """Create a Group.
 
-        :Parameters:
-            `order` : int
-                Set the order to render above or below other Groups.
-            `parent` : `~pyglet.graphics.Group`
-                Group to contain this Group; its state will be set before this
-                Group's state.
-
-        :Ivariables:
-            `visible` : bool
-                Determines whether this Group is visible in any of the Batches
-                it is assigned to. If False, objects in this Group will not
-                be rendered.
-            `batches` : list
-                Read Only. A list of which Batches this Group is a part of.
-        """
         self._order = order
         self.parent = parent
         self._visible = True
diff --git a/libs/pyglet/graphics/shader.py b/libs/pyglet/graphics/shader.py
index e9748c0..f14d0f6 100644
--- a/libs/pyglet/graphics/shader.py
+++ b/libs/pyglet/graphics/shader.py
@@ -645,19 +645,16 @@ class ShaderSource:
 
 
 class Shader:
-    """OpenGL Shader object"""
+    """OpenGL shader.
+
+    Shader objects are compiled on instantiation.
+    You can reuse a Shader object in multiple ShaderPrograms.
+
+    `shader_type` is one of ``'compute'``, ``'fragment'``, ``'geometry'``,
+    ``'tesscontrol'``, ``'tessevaluation'``, or ``'vertex'``.
+    """
 
     def __init__(self, source_string: str, shader_type: str):
-        """Create an instance of a Shader object.
-
-        Shader source code should be provided as a Python string.
-        The shader_type should be a string indicating the type.
-        Valid types are: 'compute', 'fragment', 'geometry', 'tesscontrol',
-        'tessevaluation', and 'vertex'.
-
-        Shader objects are compiled on instantiation.
-        You can reuse a Shader object in multiple `ShaderProgram`s.
-        """
         self._id = None
         self.type = shader_type
 
@@ -735,12 +732,11 @@ class Shader:
 
 
 class ShaderProgram:
-    """OpenGL Shader Program"""
+    """OpenGL shader program."""
 
     __slots__ = '_id', '_context', '_attributes', '_uniforms', '_uniform_blocks', '__weakref__'
 
     def __init__(self, *shaders: Shader):
-        """Create an OpenGL ShaderProgram from one or more Shader objects."""
         assert shaders, "At least one Shader object is required."
         self._id = _link_program(*shaders)
         self._context = pyglet.gl.current_context
@@ -825,6 +821,7 @@ class ShaderProgram:
             `mode` : int
                 OpenGL drawing mode enumeration; for example, one of
                 ``GL_POINTS``, ``GL_LINES``, ``GL_TRIANGLES``, etc.
+                This determines how the list is drawn in the given batch.
             `batch` : `~pyglet.graphics.Batch`
                 Batch to add the VertexList to, or ``None`` if a Batch will not be used.
                 Using a Batch is strongly recommended.
@@ -867,6 +864,7 @@ class ShaderProgram:
             `mode` : int
                 OpenGL drawing mode enumeration; for example, one of
                 ``GL_POINTS``, ``GL_LINES``, ``GL_TRIANGLES``, etc.
+                This determines how the list is drawn in the given batch.
             `indices` : sequence of int
                 Sequence of integers giving indices into the vertex list.
             `batch` : `~pyglet.graphics.Batch`
diff --git a/libs/pyglet/image/__init__.py b/libs/pyglet/image/__init__.py
index 0af8426..8c19d14 100644
--- a/libs/pyglet/image/__init__.py
+++ b/libs/pyglet/image/__init__.py
@@ -97,19 +97,17 @@ import re
 import weakref
 
 from ctypes import *
-from io import open, BytesIO
+from io import open
 
 import pyglet
 
-from pyglet.gl import *
-from pyglet.gl import gl_info
 from pyglet.util import asbytes
+from pyglet.animation import Animation
 
-from .codecs import ImageEncodeException, ImageDecodeException
 from .codecs import registry as _codec_registry
 from .codecs import add_default_codecs as _add_default_codecs
+from .codecs import ImageEncodeException, ImageDecodeException
 
-from .animation import Animation, AnimationFrame
 from .buffer import *
 from . import atlas
 
@@ -449,7 +447,7 @@ class AbstractImageSequence:
 
         .. versionadded:: 1.1
         """
-        return Animation.from_image_sequence(self, period, loop)
+        return Animation.from_sequence(self, period, loop)
 
     def __getitem__(self, slice):
         """Retrieve a (list of) image.
diff --git a/libs/pyglet/image/animation.py b/libs/pyglet/image/animation.py
deleted file mode 100644
index 169dd5e..0000000
--- a/libs/pyglet/image/animation.py
+++ /dev/null
@@ -1,179 +0,0 @@
-"""2D Animations
-
-Animations can be used by the :py:class:`~pyglet.sprite.Sprite` class in place
-of static images. They are essentially containers for individual image frames,
-with a duration per frame. They can be infinitely looping, or stop at the last
-frame. You can load Animations from disk, such as from GIF files::
-
-    ani = pyglet.resource.animation('walking.gif')
-    sprite = pyglet.sprite.Sprite(img=ani)
-
-Alternatively, you can create your own Animations from a sequence of images
-by using the :py:meth:`~Animation.from_image_sequence` method::
-
-    images = [pyglet.resource.image('walk_a.png'),
-              pyglet.resource.image('walk_b.png'),
-              pyglet.resource.image('walk_c.png')]
-
-    ani = pyglet.image.Animation.from_image_sequence(images, duration=0.1, loop=True)
-
-You can also use an :py:class:`pyglet.image.ImageGrid`, which is iterable::
-
-    sprite_sheet = pyglet.resource.image('my_sprite_sheet.png')
-    image_grid = pyglet.image.ImageGrid(sprite_sheet, rows=1, columns=5)
-
-    ani = pyglet.image.Animation.from_image_sequence(image_grid, duration=0.1)
-
-In the above examples, all of the Animation Frames have the same duration.
-If you wish to adjust this, you can manually create the Animation from a list of
-:py:class:`~AnimationFrame`::
-
-    image_a = pyglet.resource.image('walk_a.png')
-    image_b = pyglet.resource.image('walk_b.png')
-    image_c = pyglet.resource.image('walk_c.png')
-
-    frame_a = pyglet.image.AnimationFrame(image_a, duration=0.1)
-    frame_b = pyglet.image.AnimationFrame(image_b, duration=0.2)
-    frame_c = pyglet.image.AnimationFrame(image_c, duration=0.1)
-
-    ani = pyglet.image.Animation(frames=[frame_a, frame_b, frame_c])
-
-"""
-
-
-class Animation:
-    """Sequence of images with timing information.
-
-    If no frames of the animation have a duration of ``None``, the animation
-    loops continuously; otherwise the animation stops at the first frame with
-    duration of ``None``.
-
-    :Ivariables:
-        `frames` : list of `~pyglet.image.AnimationFrame`
-            The frames that make up the animation.
-
-    """
-
-    def __init__(self, frames):
-        """Create an animation directly from a list of frames.
-
-        :Parameters:
-            `frames` : list of `~pyglet.image.AnimationFrame`
-                The frames that make up the animation.
-
-        """
-        assert len(frames)
-        self.frames = frames
-
-    def add_to_texture_bin(self, texture_bin, border=0):
-        """Add the images of the animation to a :py:class:`~pyglet.image.atlas.TextureBin`.
-
-        The animation frames are modified in-place to refer to the texture bin
-        regions.
-
-        :Parameters:
-            `texture_bin` : `~pyglet.image.atlas.TextureBin`
-                Texture bin to upload animation frames into.
-            `border` : int
-                Leaves specified pixels of blank space around
-                each image frame when adding to the TextureBin.
-
-        """
-        for frame in self.frames:
-            frame.image = texture_bin.add(frame.image, border)
-
-    def get_transform(self, flip_x=False, flip_y=False, rotate=0):
-        """Create a copy of this animation applying a simple transformation.
-
-        The transformation is applied around the image's anchor point of
-        each frame.  The texture data is shared between the original animation
-        and the transformed animation.
-
-        :Parameters:
-            `flip_x` : bool
-                If True, the returned animation will be flipped horizontally.
-            `flip_y` : bool
-                If True, the returned animation will be flipped vertically.
-            `rotate` : int
-                Degrees of clockwise rotation of the returned animation.  Only
-                90-degree increments are supported.
-
-        :rtype: :py:class:`~pyglet.image.Animation`
-        """
-        frames = [AnimationFrame(frame.image.get_texture().get_transform(flip_x, flip_y, rotate),
-                                 frame.duration) for frame in self.frames]
-        return Animation(frames)
-
-    def get_duration(self):
-        """Get the total duration of the animation in seconds.
-
-        :rtype: float
-        """
-        return sum([frame.duration for frame in self.frames if frame.duration is not None])
-
-    def get_max_width(self):
-        """Get the maximum image frame width.
-
-        This method is useful for determining texture space requirements: due
-        to the use of ``anchor_x`` the actual required playback area may be
-        larger.
-
-        :rtype: int
-        """
-        return max([frame.image.width for frame in self.frames])
-
-    def get_max_height(self):
-        """Get the maximum image frame height.
-
-        This method is useful for determining texture space requirements: due
-        to the use of ``anchor_y`` the actual required playback area may be
-        larger.
-
-        :rtype: int
-        """
-        return max([frame.image.height for frame in self.frames])
-
-    @classmethod
-    def from_image_sequence(cls, sequence, duration, loop=True):
-        """Create an animation from a list of images and a constant framerate.
-
-        :Parameters:
-            `sequence` : list of `~pyglet.image.AbstractImage`
-                Images that make up the animation, in sequence.
-            `duration` : float
-                Number of seconds to display each image.
-            `loop` : bool
-                If True, the animation will loop continuously.
-
-        :rtype: :py:class:`~pyglet.image.Animation`
-        """
-        frames = [AnimationFrame(image, duration) for image in sequence]
-        if not loop:
-            frames[-1].duration = None
-        return cls(frames)
-
-    def __repr__(self):
-        return "Animation(frames={0})".format(len(self.frames))
-
-
-class AnimationFrame:
-    """A single frame of an animation."""
-
-    __slots__ = 'image', 'duration'
-
-    def __init__(self, image, duration):
-        """Create an animation frame from an image.
-
-        :Parameters:
-            `image` : `~pyglet.image.AbstractImage`
-                The image of this frame.
-            `duration` : float
-                Number of seconds to display the frame, or ``None`` if it is
-                the last frame in the animation.
-
-        """
-        self.image = image
-        self.duration = duration
-
-    def __repr__(self):
-        return "AnimationFrame({0}, duration={1})".format(self.image, self.duration)
diff --git a/libs/pyglet/image/codecs/gdkpixbuf2.py b/libs/pyglet/image/codecs/gdkpixbuf2.py
index 8b88a2c..6c5753f 100644
--- a/libs/pyglet/image/codecs/gdkpixbuf2.py
+++ b/libs/pyglet/image/codecs/gdkpixbuf2.py
@@ -4,6 +4,7 @@ from pyglet.gl import *
 from pyglet.image import *
 from pyglet.image.codecs import *
 from pyglet.image.codecs import gif
+from pyglet.animation import AnimationFrame
 
 import pyglet.lib
 import pyglet.window
diff --git a/libs/pyglet/libs/darwin/cocoapy/__init__.py b/libs/pyglet/libs/darwin/cocoapy/__init__.py
index 165d832..7fa2aee 100644
--- a/libs/pyglet/libs/darwin/cocoapy/__init__.py
+++ b/libs/pyglet/libs/darwin/cocoapy/__init__.py
@@ -35,3 +35,15 @@ from .runtime import ObjCClass, ObjCInstance, ObjCSubclass
 
 from .cocoatypes import *
 from .cocoalibs import *
+
+NSAutoreleasePool = ObjCClass('NSAutoreleasePool')
+
+class AutoReleasePool:
+    """Helper context function to more easily manage NSAutoreleasePool"""
+    def __enter__(self):
+        self.pool = NSAutoreleasePool.alloc().init()
+        return self.pool
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.pool.drain()
+        del self.pool
diff --git a/libs/pyglet/libs/darwin/cocoapy/cocoalibs.py b/libs/pyglet/libs/darwin/cocoapy/cocoalibs.py
index e6a26f6..1384a2d 100644
--- a/libs/pyglet/libs/darwin/cocoapy/cocoalibs.py
+++ b/libs/pyglet/libs/darwin/cocoapy/cocoalibs.py
@@ -47,8 +47,7 @@ cf.CFAttributedStringCreate.argtypes = [CFAllocatorRef, c_void_p, c_void_p]
 # Core Foundation type to Python type conversion functions
 
 def CFSTR(string):
-    return ObjCInstance(c_void_p(cf.CFStringCreateWithCString(
-            None, string.encode('utf8'), kCFStringEncodingUTF8)))
+    return cf.CFStringCreateWithCString(None, string.encode('utf8'), kCFStringEncodingUTF8)
 
 # Other possible names for this method:
 # at, ampersat, arobe, apenstaartje (little monkey tail), strudel,
@@ -57,7 +56,7 @@ def CFSTR(string):
 # kukac (caterpillar).
 def get_NSString(string):
     """Autoreleased version of CFSTR"""
-    return CFSTR(string).autorelease()
+    return ObjCInstance(c_void_p(CFSTR(string))).autorelease()
 
 def cfstring_to_string(cfstring):
     length = cf.CFStringGetLength(cfstring)
diff --git a/libs/pyglet/libs/darwin/cocoapy/runtime.py b/libs/pyglet/libs/darwin/cocoapy/runtime.py
index ba23a06..77ffc55 100644
--- a/libs/pyglet/libs/darwin/cocoapy/runtime.py
+++ b/libs/pyglet/libs/darwin/cocoapy/runtime.py
@@ -409,7 +409,6 @@ objc.sel_isEqual.argtypes = [c_void_p, c_void_p]
 objc.sel_registerName.restype = c_void_p
 objc.sel_registerName.argtypes = [c_char_p]
 
-
 ######################################################################
 # Constants
 OBJC_ASSOCIATION_ASSIGN = 0  # Weak reference to the associated object.
@@ -480,6 +479,8 @@ def should_use_fpret(restype):
 # change these values.  restype should be a ctypes type
 # and argtypes should be a list of ctypes types for
 # the arguments of the message only.
+# Note: kwarg 'argtypes' required if using args, or will fail on ARM64.
+
 def send_message(receiver, selName, *args, **kwargs):
     if isinstance(receiver, str):
         receiver = get_class(receiver)
@@ -624,11 +625,11 @@ def cfunctype_for_encoding(encoding):
         return cfunctype_table[encoding]
 
     # Otherwise, create a new CFUNCTYPE for the encoding.
-    typecodes = {b'c':             c_char, b'i': c_int, b's': c_short, b'l': c_long, b'q': c_longlong,
-                 b'C':             c_ubyte, b'I': c_uint, b'S': c_ushort, b'L': c_ulong, b'Q': c_ulonglong,
-                 b'f':             c_float, b'd': c_double, b'B': c_bool, b'v': None, b'*': c_char_p,
-                 b'@':             c_void_p, b'#': c_void_p, b':': c_void_p, NSPointEncoding: NSPoint,
-                 NSSizeEncoding:   NSSize, NSRectEncoding: NSRect, NSRangeEncoding: NSRange,
+    typecodes = {b'c': c_char, b'i': c_int, b's': c_short, b'l': c_long, b'q': c_longlong,
+                 b'C': c_ubyte, b'I': c_uint, b'S': c_ushort, b'L': c_ulong, b'Q': c_ulonglong,
+                 b'f': c_float, b'd': c_double, b'B': c_bool, b'v': None, b'*': c_char_p,
+                 b'@': c_void_p, b'#': c_void_p, b':': c_void_p, NSPointEncoding: NSPoint,
+                 NSSizeEncoding: NSSize, NSRectEncoding: NSRect, NSRangeEncoding: NSRange,
                  PyObjectEncoding: py_object}
     argtypes = []
     for code in parse_type_encoding(encoding):
@@ -704,12 +705,12 @@ class ObjCMethod:
     # Note, need to map 'c' to c_byte rather than c_char, because otherwise
     # ctypes converts the value into a one-character string which is generally
     # not what we want at all, especially when the 'c' represents a bool var.
-    typecodes = {b'c':             c_byte, b'i': c_int, b's': c_short, b'l': c_long, b'q': c_longlong,
-                 b'C':             c_ubyte, b'I': c_uint, b'S': c_ushort, b'L': c_ulong, b'Q': c_ulonglong,
-                 b'f':             c_float, b'd': c_double, b'B': c_bool, b'v': None, b'Vv': None, b'*': c_char_p,
-                 b'@':             c_void_p, b'#': c_void_p, b':': c_void_p, b'^v': c_void_p, b'?': c_void_p,
-                 NSPointEncoding:  NSPoint, NSSizeEncoding: NSSize, NSRectEncoding: NSRect,
-                 NSRangeEncoding:  NSRange,
+    typecodes = {b'c': c_byte, b'i': c_int, b's': c_short, b'l': c_long, b'q': c_longlong,
+                 b'C': c_ubyte, b'I': c_uint, b'S': c_ushort, b'L': c_ulong, b'Q': c_ulonglong,
+                 b'f': c_float, b'd': c_double, b'B': c_bool, b'v': None, b'Vv': None, b'*': c_char_p,
+                 b'@': c_void_p, b'#': c_void_p, b':': c_void_p, b'^v': c_void_p, b'?': c_void_p,
+                 NSPointEncoding: NSPoint, NSSizeEncoding: NSSize, NSRectEncoding: NSRect,
+                 NSRangeEncoding: NSRange,
                  PyObjectEncoding: py_object}
 
     cfunctype_table = {}
@@ -717,7 +718,6 @@ class ObjCMethod:
     def __init__(self, method):
         """Initialize with an Objective-C Method pointer.  We then determine
         the return type and argument type information of the method."""
-        self.cache = True
         self.selector = c_void_p(objc.method_getName(method))
         self.name = objc.sel_getName(self.selector)
         self.pyname = self.name.replace(b':', b'_')
@@ -734,7 +734,7 @@ class ObjCMethod:
         try:
             self.argtypes = [self.ctype_for_encoding(t) for t in self.argument_types]
         except:
-            # print(f'no argtypes encoding for {self.name} ({self.argument_types})')
+            # print('no argtypes encoding for %s (%s)' % (self.name, self.argument_types))
             self.argtypes = None
         # Get types for the return type.
         try:
@@ -745,7 +745,7 @@ class ObjCMethod:
             else:
                 self.restype = self.ctype_for_encoding(self.return_type)
         except:
-            # print(f'no restype encoding for {self.name} ({self.return_type})')
+            # print('no restype encoding for %s (%s)' % (self.name, self.return_type))
             self.restype = None
         self.func = None
 
@@ -803,7 +803,7 @@ class ObjCMethod:
             result = f(objc_id, self.selector, *args)
             # Convert result to python type if it is a instance or class pointer.
             if self.restype == ObjCInstance:
-                result = ObjCInstance(result, self.cache)
+                result = ObjCInstance(result)
             elif self.restype == ObjCClass:
                 result = ObjCClass(result)
             return result
@@ -826,13 +826,6 @@ class ObjCBoundMethod:
         self.method = method
         self.objc_id = objc_id
 
-    def no_cached_return(self):
-        """Disables the return type from being registered in DeallocationObserver.
-        Some return types do not get observed and will cause a memory leak.
-        Ex: NDate return types can be __NSTaggedDate
-        """
-        self.method.cache = False
-
     def __repr__(self):
         return '<ObjCBoundMethod %s (%s)>' % (self.method.name, self.objc_id)
 
@@ -967,8 +960,49 @@ class ObjCClass:
 
 ######################################################################
 
+
+class _AutoreleasepoolManager:
+    def __init__(self):
+        self.current = 0  # Current Pool ID. 0 is Global and not removed.
+        self.pools = [None]  # List of NSAutoreleasePools.
+
+    @property
+    def count(self):
+        """Number of total pools. Not including global."""
+        return len(self.pools) - 1
+
+    def create(self, pool):
+        self.pools.append(pool)
+        self.current = self.pools.index(pool)
+
+    def delete(self, pool):
+        self.pools.remove(pool)
+        self.current = len(self.pools) - 1
+
+
+_arp_manager = _AutoreleasepoolManager()
+
+_dealloc_argtype = [c_void_p]  # Just to prevent list creation every call.
+
+def _set_dealloc_observer(objc_ptr):
+    # Create a DeallocationObserver and associate it with this object.
+    # When the Objective-C object is deallocated, the observer will remove
+    # the ObjCInstance corresponding to the object from the cached objects
+    # dictionary, effectively destroying the ObjCInstance.
+    observer = send_message('DeallocationObserver', 'alloc')
+    observer = send_message(observer,  'initWithObject:', objc_ptr, argtypes=_dealloc_argtype)
+    objc.objc_setAssociatedObject(objc_ptr, observer, observer, OBJC_ASSOCIATION_RETAIN)
+
+    # The observer is retained by the object we associate it to.  We release
+    # the observer now so that it will be deallocated when the associated
+    # object is deallocated.
+    send_message(observer, 'release')
+
+
 class ObjCInstance:
     """Python wrapper for an Objective-C instance."""
+    pool = 0  # What pool id this belongs in.
+    retained = False  # If instance is kept even if pool is wiped.
 
     _cached_objects = {}
 
@@ -1004,17 +1038,16 @@ class ObjCInstance:
         if cache:
             cls._cached_objects[object_ptr.value] = objc_instance
 
-            # Create a DeallocationObserver and associate it with this object.
-            # When the Objective-C object is deallocated, the observer will remove
-            # the ObjCInstance corresponding to the object from the cached objects
-            # dictionary, effectively destroying the ObjCInstance.
-            observer = send_message(send_message('DeallocationObserver', 'alloc'), 'initWithObject:', objc_instance)
-            objc.objc_setAssociatedObject(objc_instance, observer, observer, OBJC_ASSOCIATION_RETAIN)
-
-            # The observer is retained by the object we associate it to.  We release
-            # the observer now so that it will be deallocated when the associated
-            # object is deallocated.
-            send_message(observer, 'release')
+            # Creation of NSAutoreleasePool instance does not technically mean it was allocated and initialized, but
+            # it's standard practice, so this should not be an issue.
+            if objc_instance.objc_class.name == b"NSAutoreleasePool":
+                _arp_manager.create(objc_instance)
+                objc_instance.pool = _arp_manager.current
+                _set_dealloc_observer(object_ptr)
+            elif _arp_manager.current:
+                objc_instance.pool = _arp_manager.current
+            else:
+                _set_dealloc_observer(object_ptr)
 
         return objc_instance
 
@@ -1048,12 +1081,16 @@ class ObjCInstance:
         # Otherwise raise an exception.
         raise AttributeError('ObjCInstance %s has no attribute %s' % (self.objc_class.name, name))
 
+
 def get_cached_instances():
     """For debug purposes, return a list of instance names.
     Useful for debugging if an object is leaking."""
     return [obj.objc_class.name for obj in ObjCInstance._cached_objects.values()]
+
+
 ######################################################################
 
+
 def convert_method_arguments(encoding, args):
     """Used by ObjCSubclass to convert Objective-C method arguments to
     Python values before passing them on to the Python-defined method."""
@@ -1183,8 +1220,9 @@ class ObjCSubclass:
 
         def decorator(f):
             def objc_method(objc_self, objc_cmd, *args):
-                py_self = ObjCInstance(objc_self)
+                py_self = ObjCInstance(objc_self, True)
                 py_self.objc_cmd = objc_cmd
+                py_self.retained = True
                 args = convert_method_arguments(encoding, args)
                 result = f(py_self, *args)
                 if isinstance(result, ObjCClass):
@@ -1246,17 +1284,15 @@ class DeallocationObserver_Implementation:
     DeallocationObserver.register()
 
     @DeallocationObserver.rawmethod('@@')
-    def initWithObject_(self, cmd, anObject):
+    def initWithObject_(self, cmd, objc_ptr):
         self = send_super(self, 'init')
         self = self.value
-        set_instance_variable(self, 'observed_object', anObject, c_void_p)
+        set_instance_variable(self, 'observed_object', objc_ptr, c_void_p)
         return self
 
     @DeallocationObserver.rawmethod('v')
     def dealloc(self, cmd):
-        anObject = get_instance_variable(self, 'observed_object', c_void_p)
-        ObjCInstance._cached_objects.pop(anObject, None)
-        send_super(self, 'dealloc')
+        _obj_observer_dealloc(self, 'dealloc')
 
     @DeallocationObserver.rawmethod('v')
     def finalize(self, cmd):
@@ -1264,6 +1300,40 @@ class DeallocationObserver_Implementation:
         # (which would have to be explicitly started with
         # objc_startCollectorThread(), so probably not too much reason
         # to have this here, but I guess it can't hurt.)
-        anObject = get_instance_variable(self, 'observed_object', c_void_p)
-        ObjCInstance._cached_objects.pop(anObject, None)
-        send_super(self, 'finalize')
+        _obj_observer_dealloc(self, 'finalize')
+
+
+def _obj_observer_dealloc(objc_obs, selector_name):
+    """Removes any cached ObjCInstances in Python to prevent memory leaks.
+    Manually break association as it's not implicitly mentioned that dealloc would break an association,
+    although we do not use the object after.
+    """
+    objc_ptr = get_instance_variable(objc_obs, 'observed_object', c_void_p)
+    if objc_ptr:
+        objc.objc_setAssociatedObject(objc_ptr, objc_obs, None, OBJC_ASSOCIATION_ASSIGN)
+        objc_i = ObjCInstance._cached_objects.pop(objc_ptr, None)
+        if objc_i:
+            _clear_arp_objects(objc_i)
+
+    send_super(objc_obs, selector_name)
+
+
+def _clear_arp_objects(objc_i: ObjCInstance):
+    """Cleanup any ObjCInstance's created during an AutoreleasePool creation.
+    See discussion and investigation thanks to mrJean with leaks regarding pools:
+        https://github.com/mrJean1/PyCocoa/issues/6
+    It was determined that objects in an AutoreleasePool are not guaranteed to call a dealloc, creating memory leaks.
+    The DeallocObserver relies on this to free memory in the ObjCInstance._cached_objects.
+        Solution is as follows:
+    1) Do not observe any ObjCInstance's with DeallocObserver when non-global autorelease pool is in scope.
+    2) Some objects such as ObjCSubclass's must be retained.
+    3) When a pool is drained and dealloc'd, clear all ObjCInstances in that pool that are not retained.
+    """
+    if objc_i.objc_class.name == b"NSAutoreleasePool":
+        pool_id = objc_i.pool
+        for cobjc_ptr in list(ObjCInstance._cached_objects.keys()):
+            cobjc_i = ObjCInstance._cached_objects[cobjc_ptr]
+            if cobjc_i.retained is False and cobjc_i.pool == pool_id:
+                del ObjCInstance._cached_objects[cobjc_ptr]
+
+        _arp_manager.delete(objc_i)
diff --git a/libs/pyglet/libs/win32/winkey.py b/libs/pyglet/libs/win32/winkey.py
index a3ee3fe..9205b25 100644
--- a/libs/pyglet/libs/win32/winkey.py
+++ b/libs/pyglet/libs/win32/winkey.py
@@ -120,14 +120,14 @@ keymap = {
     VK_F14: key.F14,
     VK_F15: key.F15,
     VK_F16: key.F16,
-    #    VK_F17: ,
-    #    VK_F18: ,
-    #    VK_F19: ,
-    #    VK_F20: ,
-    #    VK_F21: ,
-    #    VK_F22: ,
-    #    VK_F23: ,
-    #    VK_F24: ,
+    VK_F17: key.F17,
+    VK_F18: key.F18,
+    VK_F19: key.F19,
+    VK_F20: key.F20,
+    VK_F21: key.F21,
+    VK_F22: key.F22,
+    VK_F23: key.F23,
+    VK_F24: key.F24,
     VK_NUMLOCK: key.NUMLOCK,
     VK_SCROLL: key.SCROLLLOCK,
     VK_LSHIFT: key.LSHIFT,
diff --git a/libs/pyglet/sprite.py b/libs/pyglet/sprite.py
index 31ad3e2..909ab8c 100644
--- a/libs/pyglet/sprite.py
+++ b/libs/pyglet/sprite.py
@@ -69,12 +69,14 @@ import sys
 
 import pyglet
 
-from pyglet.gl import *
 from pyglet import clock
-from pyglet import event
 from pyglet import graphics
 from pyglet import image
 
+from pyglet.gl import *
+from pyglet.animation import AnimationController, Animation
+
+
 _is_pyglet_doc_run = hasattr(sys, "is_pyglet_doc_run") and sys.is_pyglet_doc_run
 
 
@@ -233,16 +235,13 @@ class SpriteGroup(graphics.Group):
                      self.blend_src, self.blend_dest))
 
 
-class Sprite(event.EventDispatcher):
+class Sprite(AnimationController):
     """Instance of an on-screen image.
 
     See the module documentation for usage.
     """
 
     _batch = None
-    _animation = None
-    _frame_index = 0
-    _paused = False
     _rotation = 0
     _opacity = 255
     _rgb = (255, 255, 255)
@@ -263,7 +262,7 @@ class Sprite(event.EventDispatcher):
         """Create a sprite.
 
         :Parameters:
-            `img` : `~pyglet.image.AbstractImage` or `~pyglet.image.Animation`
+            `img` : `~pyglet.image.AbstractImage` or `~pyglet.animation.Animation`
                 Image or animation to display.
             `x` : int
                 X coordinate of the sprite.
@@ -290,9 +289,9 @@ class Sprite(event.EventDispatcher):
         self._z = z
         self._img = img
 
-        if isinstance(img, image.Animation):
+        if isinstance(img, Animation):
             self._animation = img
-            self._texture = img.frames[0].image.get_texture()
+            self._texture = img.frames[0].data.get_texture()
             self._next_dt = img.frames[0].duration
             if self._next_dt:
                 clock.schedule_once(self._animate, self._next_dt)
@@ -345,7 +344,7 @@ class Sprite(event.EventDispatcher):
                 return  # Deleted in event handler.
 
         frame = self._animation.frames[self._frame_index]
-        self._set_texture(frame.image.get_texture())
+        self._set_texture(frame.data.get_texture())
 
         if frame.duration is not None:
             duration = frame.duration - (self._next_dt - dt)
@@ -407,7 +406,7 @@ class Sprite(event.EventDispatcher):
         """Image or animation to display.
 
         :type: :py:class:`~pyglet.image.AbstractImage` or
-               :py:class:`~pyglet.image.Animation`
+               :py:class:`~pyglet.animation.Animation`
         """
         if self._animation:
             return self._animation
@@ -419,7 +418,7 @@ class Sprite(event.EventDispatcher):
             clock.unschedule(self._animate)
             self._animation = None
 
-        if isinstance(img, image.Animation):
+        if isinstance(img, Animation):
             self._animation = img
             self._frame_index = 0
             self._set_texture(img.frames[0].image.get_texture())
@@ -730,51 +729,6 @@ class Sprite(event.EventDispatcher):
         self._visible = visible
         self._update_position()
 
-    @property
-    def paused(self):
-        """Pause/resume the Sprite's Animation
-
-        If `Sprite.image` is an Animation, you can pause or resume
-        the animation by setting this property to True or False.
-        If not an Animation, this has no effect.
-
-        :type: bool
-        """
-        return self._paused
-
-    @paused.setter
-    def paused(self, pause):
-        if not hasattr(self, '_animation') or pause == self._paused:
-            return
-        if pause is True:
-            clock.unschedule(self._animate)
-        else:
-            frame = self._animation.frames[self._frame_index]
-            self._next_dt = frame.duration
-            if self._next_dt:
-                clock.schedule_once(self._animate, self._next_dt)
-        self._paused = pause
-
-    @property
-    def frame_index(self):
-        """The current Animation frame.
-
-        If the `Sprite.image` is an `Animation`,
-        you can query or set the current frame.
-        If not an Animation, this will always
-        be 0.
-
-        :type: int
-        """
-        return self._frame_index
-
-    @frame_index.setter
-    def frame_index(self, index):
-        # Bound to available number of frames
-        if self._animation is None:
-            return
-        self._frame_index = max(0, min(index, len(self._animation.frames)-1))
-
     def draw(self):
         """Draw the sprite at its current position.
 
@@ -797,9 +751,6 @@ class Sprite(event.EventDispatcher):
             """
 
 
-Sprite.register_event_type('on_animation_end')
-
-
 class AdvancedSprite(pyglet.sprite.Sprite):
     """Is a sprite that lets you change the shader program during initialization and after
     For advanced users who understand shaders."""
@@ -837,7 +788,3 @@ class AdvancedSprite(pyglet.sprite.Sprite):
                                        self._group)
         self._batch.migrate(self._vertex_list, GL_TRIANGLES, self._group, self._batch)
         self._program = program
-
-
-
-
diff --git a/libs/pyglet/window/__init__.py b/libs/pyglet/window/__init__.py
index e325d28..e7f8fa7 100644
--- a/libs/pyglet/window/__init__.py
+++ b/libs/pyglet/window/__init__.py
@@ -1011,7 +1011,7 @@ class BaseWindow(with_metaclass(_WindowMetaclass, EventDispatcher)):
 
         Once set, the user will not be able to resize the window smaller
         than the given dimensions.  There is no way to remove the
-        minimum size constraint on a window (but you could set it to 0,0).
+        minimum size constraint on a window (but you could set it to 1, 1).
 
         The behaviour is undefined if the minimum size is set larger than
         the current size of the window.
diff --git a/libs/pyglet/window/cocoa/__init__.py b/libs/pyglet/window/cocoa/__init__.py
index c194e56..6b127ec 100644
--- a/libs/pyglet/window/cocoa/__init__.py
+++ b/libs/pyglet/window/cocoa/__init__.py
@@ -8,7 +8,7 @@ from pyglet.event import EventDispatcher
 
 from pyglet.canvas.cocoa import CocoaCanvas
 
-from pyglet.libs.darwin import cocoapy, CGPoint
+from pyglet.libs.darwin import cocoapy, CGPoint, AutoReleasePool
 
 from .systemcursor import SystemCursor
 from .pyglet_delegate import PygletDelegate
@@ -17,7 +17,6 @@ from .pyglet_view import PygletView
 
 NSApplication = cocoapy.ObjCClass('NSApplication')
 NSCursor = cocoapy.ObjCClass('NSCursor')
-NSAutoreleasePool = cocoapy.ObjCClass('NSAutoreleasePool')
 NSColor = cocoapy.ObjCClass('NSColor')
 NSEvent = cocoapy.ObjCClass('NSEvent')
 NSArray = cocoapy.ObjCClass('NSArray')
@@ -42,6 +41,13 @@ class CocoaMouseCursor(MouseCursor):
 
 class CocoaWindow(BaseWindow):
 
+    def __init__(self, width=None, height=None, caption=None, resizable=False, style=BaseWindow.WINDOW_STYLE_DEFAULT,
+                 fullscreen=False, visible=True, vsync=True, file_drops=False, display=None, screen=None, config=None,
+                 context=None, mode=None):
+        with AutoReleasePool():
+            super().__init__(width, height, caption, resizable, style, fullscreen, visible, vsync, file_drops, display,
+                             screen, config, context, mode)
+
     # NSWindow instance.
     _nswindow = None
 
@@ -57,14 +63,14 @@ class CocoaWindow(BaseWindow):
 
     # NSWindow style masks.
     _style_masks = {
-        BaseWindow.WINDOW_STYLE_DEFAULT:    cocoapy.NSTitledWindowMask |
-                                            cocoapy.NSClosableWindowMask |
-                                            cocoapy.NSMiniaturizableWindowMask,
-        BaseWindow.WINDOW_STYLE_DIALOG:     cocoapy.NSTitledWindowMask |
-                                            cocoapy.NSClosableWindowMask,
-        BaseWindow.WINDOW_STYLE_TOOL:       cocoapy.NSTitledWindowMask |
-                                            cocoapy.NSClosableWindowMask |
-                                            cocoapy.NSUtilityWindowMask,
+        BaseWindow.WINDOW_STYLE_DEFAULT: cocoapy.NSTitledWindowMask |
+                                         cocoapy.NSClosableWindowMask |
+                                         cocoapy.NSMiniaturizableWindowMask,
+        BaseWindow.WINDOW_STYLE_DIALOG: cocoapy.NSTitledWindowMask |
+                                        cocoapy.NSClosableWindowMask,
+        BaseWindow.WINDOW_STYLE_TOOL: cocoapy.NSTitledWindowMask |
+                                      cocoapy.NSClosableWindowMask |
+                                      cocoapy.NSUtilityWindowMask,
         BaseWindow.WINDOW_STYLE_BORDERLESS: cocoapy.NSBorderlessWindowMask,
     }
 
@@ -79,108 +85,104 @@ class CocoaWindow(BaseWindow):
         self._create()
 
     def _create(self):
-        # Create a temporary autorelease pool for this method.
-        pool = NSAutoreleasePool.alloc().init()
+        with AutoReleasePool():
+            if self._nswindow:
+                # The window is about the be recreated so destroy everything
+                # associated with the old window, then destroy the window itself.
+                nsview = self.canvas.nsview
+                self.canvas = None
+                self._nswindow.orderOut_(None)
+                self._nswindow.close()
+                self.context.detach()
+                self._nswindow.release()
+                self._nswindow = None
+                nsview.release()
+                self._delegate.release()
+                self._delegate = None
 
-        if self._nswindow:
-            # The window is about the be recreated so destroy everything
-            # associated with the old window, then destroy the window itself.
-            nsview = self.canvas.nsview
-            self.canvas = None
-            self._nswindow.orderOut_(None)
-            self._nswindow.close()
-            self.context.detach()
-            self._nswindow.release()
-            self._nswindow = None
-            nsview.release()
-            self._delegate.release()
-            self._delegate = None
+            # Determine window parameters.
+            content_rect = cocoapy.NSMakeRect(0, 0, self._width, self._height)
+            WindowClass = PygletWindow
+            if self._fullscreen:
+                style_mask = cocoapy.NSBorderlessWindowMask
+            else:
+                if self._style not in self._style_masks:
+                    self._style = self.WINDOW_STYLE_DEFAULT
+                style_mask = self._style_masks[self._style]
+                if self._resizable:
+                    style_mask |= cocoapy.NSResizableWindowMask
+                if self._style == BaseWindow.WINDOW_STYLE_TOOL:
+                    WindowClass = PygletToolWindow
 
-        # Determine window parameters.
-        content_rect = cocoapy.NSMakeRect(0, 0, self._width, self._height)
-        WindowClass = PygletWindow
-        if self._fullscreen:
-            style_mask = cocoapy.NSBorderlessWindowMask
-        else:
-            if self._style not in self._style_masks:
-                self._style = self.WINDOW_STYLE_DEFAULT
-            style_mask = self._style_masks[self._style]
-            if self._resizable:
-                style_mask |= cocoapy.NSResizableWindowMask
-            if self._style == BaseWindow.WINDOW_STYLE_TOOL:
-                WindowClass = PygletToolWindow
+            # First create an instance of our NSWindow subclass.
 
-        # First create an instance of our NSWindow subclass.
+            # FIX ME:
+            # Need to use this initializer to have any hope of multi-monitor support.
+            # But currently causes problems on Mac OS X Lion.  So for now, we initialize the
+            # window without including screen information.
+            #
+            # self._nswindow = WindowClass.alloc().initWithContentRect_styleMask_backing_defer_screen_(
+            #     content_rect,           # contentRect
+            #     style_mask,             # styleMask
+            #     NSBackingStoreBuffered, # backing
+            #     False,                  # defer
+            #     self.screen.get_nsscreen())  # screen
 
-        # FIX ME:
-        # Need to use this initializer to have any hope of multi-monitor support.
-        # But currently causes problems on Mac OS X Lion.  So for now, we initialize the
-        # window without including screen information.
-        #
-        # self._nswindow = WindowClass.alloc().initWithContentRect_styleMask_backing_defer_screen_(
-        #     content_rect,           # contentRect
-        #     style_mask,             # styleMask
-        #     NSBackingStoreBuffered, # backing
-        #     False,                  # defer
-        #     self.screen.get_nsscreen())  # screen
+            self._nswindow = WindowClass.alloc().initWithContentRect_styleMask_backing_defer_(
+                content_rect,  # contentRect
+                style_mask,  # styleMask
+                cocoapy.NSBackingStoreBuffered,  # backing
+                False)  # defer
 
-        self._nswindow = WindowClass.alloc().initWithContentRect_styleMask_backing_defer_(
-            content_rect,                    # contentRect
-            style_mask,                      # styleMask
-            cocoapy.NSBackingStoreBuffered,  # backing
-            False)                           # defer
+            if self._fullscreen:
+                # BUG: I suspect that this doesn't do the right thing when using
+                # multiple monitors (which would be to go fullscreen on the monitor
+                # where the window is located).  However I've no way to test.
+                blackColor = NSColor.blackColor()
+                self._nswindow.setBackgroundColor_(blackColor)
+                self._nswindow.setOpaque_(True)
+                self.screen.capture_display()
+                self._nswindow.setLevel_(quartz.CGShieldingWindowLevel())
+                self.context.set_full_screen()
+                self._center_window()
+                self._mouse_in_window = True
+            else:
+                self._set_nice_window_location()
+                self._mouse_in_window = self._mouse_in_content_rect()
 
-        if self._fullscreen:
-            # BUG: I suspect that this doesn't do the right thing when using
-            # multiple monitors (which would be to go fullscreen on the monitor
-            # where the window is located).  However I've no way to test.
-            blackColor = NSColor.blackColor()
-            self._nswindow.setBackgroundColor_(blackColor)
-            self._nswindow.setOpaque_(True)
-            self.screen.capture_display()
-            self._nswindow.setLevel_(quartz.CGShieldingWindowLevel())
-            self.context.set_full_screen()
-            self._center_window()
-            self._mouse_in_window = True
-        else:
-            self._set_nice_window_location()
-            self._mouse_in_window = self._mouse_in_content_rect()
+            # Then create a view and set it as our NSWindow's content view.
+            self._nsview = PygletView.alloc().initWithFrame_cocoaWindow_(content_rect, self)
+            self._nswindow.setContentView_(self._nsview)
+            self._nswindow.makeFirstResponder_(self._nsview)
 
-        # Then create a view and set it as our NSWindow's content view.
-        self._nsview = PygletView.alloc().initWithFrame_cocoaWindow_(content_rect, self)
-        self._nswindow.setContentView_(self._nsview)
-        self._nswindow.makeFirstResponder_(self._nsview)
+            # Create a canvas with the view as its drawable and attach context to it.
+            self.canvas = CocoaCanvas(self.display, self.screen, self._nsview)
+            self.context.attach(self.canvas)
 
-        # Create a canvas with the view as its drawable and attach context to it.
-        self.canvas = CocoaCanvas(self.display, self.screen, self._nsview)
-        self.context.attach(self.canvas)
+            # Configure the window.
+            self._nswindow.setAcceptsMouseMovedEvents_(True)
+            self._nswindow.setReleasedWhenClosed_(False)
+            self._nswindow.useOptimizedDrawing_(True)
+            self._nswindow.setPreservesContentDuringLiveResize_(False)
 
-        # Configure the window.
-        self._nswindow.setAcceptsMouseMovedEvents_(True)
-        self._nswindow.setReleasedWhenClosed_(False)
-        self._nswindow.useOptimizedDrawing_(True)
-        self._nswindow.setPreservesContentDuringLiveResize_(False)
+            # Set the delegate.
+            self._delegate = PygletDelegate.alloc().initWithWindow_(self)
 
-        # Set the delegate.
-        self._delegate = PygletDelegate.alloc().initWithWindow_(self)
+            # Configure CocoaWindow.
+            self.set_caption(self._caption)
+            if self._minimum_size is not None:
+                self.set_minimum_size(*self._minimum_size)
+            if self._maximum_size is not None:
+                self.set_maximum_size(*self._maximum_size)
 
-        # Configure CocoaWindow.
-        self.set_caption(self._caption)
-        if self._minimum_size is not None:
-            self.set_minimum_size(*self._minimum_size)
-        if self._maximum_size is not None:
-            self.set_maximum_size(*self._maximum_size)
+            if self._file_drops:
+                array = NSArray.arrayWithObject_(cocoapy.NSPasteboardTypeURL)
+                self._nsview.registerForDraggedTypes_(array)
 
-        if self._file_drops:
-            array = NSArray.arrayWithObject_(cocoapy.NSPasteboardTypeURL)
-            self._nsview.registerForDraggedTypes_(array)
-
-        self.context.update_geometry()
-        self.switch_to()
-        self.set_vsync(self._vsync)
-        self.set_visible(self._visible)
-
-        pool.drain()
+            self.context.update_geometry()
+            self.switch_to()
+            self.set_vsync(self._vsync)
+            self.set_visible(self._visible)
 
     def _set_nice_window_location(self):
         # Construct a list of all visible windows that aren't us.
@@ -208,42 +210,39 @@ class CocoaWindow(BaseWindow):
         if self._was_closed:
             return
 
-        # Create a temporary autorelease pool for this method.
-        pool = NSAutoreleasePool.new()
+        with AutoReleasePool():
+            # Restore cursor visibility
+            self.set_mouse_platform_visible(True)
+            self.set_exclusive_mouse(False)
+            self.set_exclusive_keyboard(False)
 
-        # Restore cursor visibility
-        self.set_mouse_platform_visible(True)
-        self.set_exclusive_mouse(False)
-        self.set_exclusive_keyboard(False)
+            # Remove the delegate object
+            if self._delegate:
+                self._nswindow.setDelegate_(None)
+                self._delegate.release()
+                self._delegate = None
 
-        # Remove the delegate object
-        if self._delegate:
-            self._nswindow.setDelegate_(None)
-            self._delegate.release()
-            self._delegate = None
+            # Remove window from display and remove its view.
+            if self._nswindow:
+                self._nswindow.orderOut_(None)
+                self._nswindow.setContentView_(None)
+                self._nswindow.close()
 
-        # Remove window from display and remove its view.
-        if self._nswindow:
-            self._nswindow.orderOut_(None)
-            self._nswindow.setContentView_(None)
-            self._nswindow.close()
+            # Restore screen mode. This also releases the display
+            # if it was captured for fullscreen mode.
+            self.screen.restore_mode()
 
-        # Restore screen mode. This also releases the display
-        # if it was captured for fullscreen mode.
-        self.screen.restore_mode()
+            # Remove view from canvas and then remove canvas.
+            if self.canvas:
+                self.canvas.nsview.release()
+                self.canvas.nsview = None
+                self.canvas = None
 
-        # Remove view from canvas and then remove canvas.
-        if self.canvas:
-            self.canvas.nsview.release()
-            self.canvas.nsview = None
-            self.canvas = None
+            # Do this last, so that we don't see white flash
+            # when exiting application from fullscreen mode.
+            super(CocoaWindow, self).close()
 
-        # Do this last, so that we don't see white flash
-        # when exiting application from fullscreen mode.
-        super(CocoaWindow, self).close()
-
-        self._was_closed = True
-        pool.drain()
+            self._was_closed = True
 
     def switch_to(self):
         if self.context:
@@ -261,26 +260,24 @@ class CocoaWindow(BaseWindow):
         event = True
 
         # Dequeue and process all of the pending Cocoa events.
-        pool = NSAutoreleasePool.new()
-        NSApp = NSApplication.sharedApplication()
-        while event and self._nswindow and self._context:
-            event = NSApp.nextEventMatchingMask_untilDate_inMode_dequeue_(
-                cocoapy.NSAnyEventMask, None, cocoapy.NSEventTrackingRunLoopMode, True)
+        with AutoReleasePool():
+            NSApp = NSApplication.sharedApplication()
+            while event and self._nswindow and self._context:
+                event = NSApp.nextEventMatchingMask_untilDate_inMode_dequeue_(
+                    cocoapy.NSAnyEventMask, None, cocoapy.NSEventTrackingRunLoopMode, True)
 
-            if event:
-                event_type = event.type()
-                # Pass on all events.
-                NSApp.sendEvent_(event)
-                # And resend key events to special handlers.
-                if event_type == cocoapy.NSKeyDown and not event.isARepeat():
-                    NSApp.sendAction_to_from_(cocoapy.get_selector('pygletKeyDown:'), None, event)
-                elif event_type == cocoapy.NSKeyUp:
-                    NSApp.sendAction_to_from_(cocoapy.get_selector('pygletKeyUp:'), None, event)
-                elif event_type == cocoapy.NSFlagsChanged:
-                    NSApp.sendAction_to_from_(cocoapy.get_selector('pygletFlagsChanged:'), None, event)
-                NSApp.updateWindows()
-
-        pool.drain()
+                if event:
+                    event_type = event.type()
+                    # Pass on all events.
+                    NSApp.sendEvent_(event)
+                    # And resend key events to special handlers.
+                    if event_type == cocoapy.NSKeyDown and not event.isARepeat():
+                        NSApp.sendAction_to_from_(cocoapy.get_selector('pygletKeyDown:'), None, event)
+                    elif event_type == cocoapy.NSKeyUp:
+                        NSApp.sendAction_to_from_(cocoapy.get_selector('pygletKeyUp:'), None, event)
+                    elif event_type == cocoapy.NSFlagsChanged:
+                        NSApp.sendAction_to_from_(cocoapy.get_selector('pygletFlagsChanged:'), None, event)
+                    NSApp.updateWindows()
 
         self._allow_dispatch_event = False
 
@@ -486,25 +483,25 @@ class CocoaWindow(BaseWindow):
         if name == self.CURSOR_DEFAULT:
             return DefaultMouseCursor()
         cursors = {
-            self.CURSOR_CROSSHAIR:       'crosshairCursor',
-            self.CURSOR_HAND:            'pointingHandCursor',
-            self.CURSOR_HELP:            'arrowCursor',
-            self.CURSOR_NO:              'operationNotAllowedCursor',  # Mac OS 10.6
-            self.CURSOR_SIZE:            'arrowCursor',
-            self.CURSOR_SIZE_UP:         'resizeUpCursor',
-            self.CURSOR_SIZE_UP_RIGHT:   'arrowCursor',
-            self.CURSOR_SIZE_RIGHT:      'resizeRightCursor',
+            self.CURSOR_CROSSHAIR: 'crosshairCursor',
+            self.CURSOR_HAND: 'pointingHandCursor',
+            self.CURSOR_HELP: 'arrowCursor',
+            self.CURSOR_NO: 'operationNotAllowedCursor',  # Mac OS 10.6
+            self.CURSOR_SIZE: 'arrowCursor',
+            self.CURSOR_SIZE_UP: 'resizeUpCursor',
+            self.CURSOR_SIZE_UP_RIGHT: 'arrowCursor',
+            self.CURSOR_SIZE_RIGHT: 'resizeRightCursor',
             self.CURSOR_SIZE_DOWN_RIGHT: 'arrowCursor',
-            self.CURSOR_SIZE_DOWN:       'resizeDownCursor',
-            self.CURSOR_SIZE_DOWN_LEFT:  'arrowCursor',
-            self.CURSOR_SIZE_LEFT:       'resizeLeftCursor',
-            self.CURSOR_SIZE_UP_LEFT:    'arrowCursor',
-            self.CURSOR_SIZE_UP_DOWN:    'resizeUpDownCursor',
+            self.CURSOR_SIZE_DOWN: 'resizeDownCursor',
+            self.CURSOR_SIZE_DOWN_LEFT: 'arrowCursor',
+            self.CURSOR_SIZE_LEFT: 'resizeLeftCursor',
+            self.CURSOR_SIZE_UP_LEFT: 'arrowCursor',
+            self.CURSOR_SIZE_UP_DOWN: 'resizeUpDownCursor',
             self.CURSOR_SIZE_LEFT_RIGHT: 'resizeLeftRightCursor',
-            self.CURSOR_TEXT:            'IBeamCursor',
-            self.CURSOR_WAIT:            'arrowCursor',  # No wristwatch cursor in Cocoa
-            self.CURSOR_WAIT_ARROW:      'arrowCursor',  # No wristwatch cursor in Cocoa
-            }
+            self.CURSOR_TEXT: 'IBeamCursor',
+            self.CURSOR_WAIT: 'arrowCursor',  # No wristwatch cursor in Cocoa
+            self.CURSOR_WAIT_ARROW: 'arrowCursor',  # No wristwatch cursor in Cocoa
+        }
         if name not in cursors:
             raise RuntimeError('Unknown cursor name "%s"' % name)
         return CocoaMouseCursor(cursors[name])
@@ -514,7 +511,7 @@ class CocoaWindow(BaseWindow):
             # If absolute, then x, y is given in global display coordinates
             # which sets (0,0) at top left corner of main display.  It is possible
             # to warp the mouse position to a point inside of another display.
-            quartz.CGWarpMouseCursorPosition(CGPoint(x,y))
+            quartz.CGWarpMouseCursorPosition(CGPoint(x, y))
         else:
             # Window-relative coordinates: (x, y) are given in window coords
             # with (0,0) at bottom-left corner of window and y up.  We find
@@ -538,7 +535,7 @@ class CocoaWindow(BaseWindow):
             # Move mouse to center of window.
             frame = self._nswindow.frame()
             width, height = frame.size.width, frame.size.height
-            self.set_mouse_position(width/2, height/2)
+            self.set_mouse_position(width / 2, height / 2)
             quartz.CGAssociateMouseAndMouseCursorPosition(False)
         else:
             quartz.CGAssociateMouseAndMouseCursorPosition(True)
diff --git a/libs/pyglet/window/key.py b/libs/pyglet/window/key.py
index bde76d4..570e1f8 100644
--- a/libs/pyglet/window/key.py
+++ b/libs/pyglet/window/key.py
@@ -293,7 +293,10 @@ F17           = 0xffce
 F18           = 0xffcf
 F19           = 0xffd0
 F20           = 0xffd1
-
+F21           = 0xffd2
+F22           = 0xffd3
+F23           = 0xffd4
+F24           = 0xffd5
 # Modifiers
 LSHIFT        = 0xffe1
 RSHIFT        = 0xffe2