user: Explain A in complete detail according to the official Blender documentation.

assistant: py.types.Armature.animation_data) - [Armature.bones (in module bpy.types)](bpy.types.Armature.html#bpy.types.Armature.bones) - [Armature.collections_all (in module bpy.types)](bpy.types.Armature.html#bpy.types.Armature.collections_all) - [Armature.edit_bones (in module bpy.types)](bpy.types.Armature.html#bpy.types.Armature.edit_bones) - [Armature.is_editmode (in module bpy.types)](bpy.types.Armature.html#bpy.types.Armature.is_editmode) - [armature_add() (in module bpy.ops.object)](bpy.ops.object.html#bpy.ops.object.armature_add) - [armature_apply() (in module bpy.ops.pose)](bpy.ops.pose.html#bpy.ops.pose.armature_apply) - [ArmatureBones (class in bpy.types)](bpy.types.ArmatureBones.html#bpy.types.ArmatureBones) - [ArmatureConstraint (class in bpy.types)](bpy.types.ArmatureConstraint.html#bpy.types.ArmatureConstraint) - [ArmatureConstraint.targets (in module bpy.types)](bpy.types.ArmatureConstraint.html#bpy.types.ArmatureConstraint.targets) - [ArmatureConstraintTargets (class in bpy.types)](bpy.types.ArmatureConstraintTargets.html#bpy.types.ArmatureConstraintTargets) - [ArmatureEditBones (class in bpy.types)](bpy.types.ArmatureEditBones.html#bpy.types.ArmatureEditBones) - [ArmatureModifier (class in bpy.types)](bpy.types.ArmatureModifier.html#bpy.types.ArmatureModifier) - [arrange_islands() (in module bpy.ops.uv)](bpy.ops.uv.html#bpy.ops.uv.arrange_islands) - [array_index (bpy.types.FCurve attribute)](bpy.types.FCurve.html#bpy.types.FCurve.array_index)   - [(bpy.types.KeyingSetPath attribute)](bpy.types.KeyingSetPath.html#bpy.types.KeyingSetPath.array_index) - [ArrayModifier (class in bpy.types)](bpy.types.ArrayModifier.html#bpy.types.ArrayModifier) - [as_keywords() (bpy.types.Operator method)](bpy.types.Operator.html#bpy.types.Operator.as_keywords) - [as_module() (bpy.types.Text method)](bpy.types.Text.html#bpy.types.Text.as_module) - [as_pointer() (bpy.types.bpy_struct method)](bpy.types.bpy_struct.html#bpy.types.bpy_struct.as_pointer) - [as_render_pass (bpy.types.FreestyleSettings attribute)](bpy.types.FreestyleSettings.html#bpy.types.FreestyleSettings.as_render_pass) - [as_string() (bpy.types.Text method)](bpy.types.Text.html#bpy.types.Text.as_string) - [aspect (bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.aspect) - [aspect() (in module blf)](blf.html#blf.aspect) - [aspect_x (bpy.types.UVProjectModifier attribute)](bpy.types.UVProjectModifier.html#bpy.types.UVProjectModifier.aspect_x) - [aspect_y (bpy.types.UVProjectModifier attribute)](bpy.types.UVProjectModifier.html#bpy.types.UVProjectModifier.aspect_y) - [asset (in module bpy.context)](bpy.context.html#bpy.context.asset) - [asset_activate() (in module bpy.ops.brush)](bpy.ops.brush.html#bpy.ops.brush.asset_activate) - [asset_clear() (bpy.types.ID method)](bpy.types.ID.html#bpy.types.ID.asset_clear) - [asset_data (bpy.types.ID attribute)](bpy.types.ID.html#bpy.types.ID.asset_data) - [asset_delete() (in module bpy.ops.brush)](bpy.ops.brush.html#bpy.ops.brush.asset_delete)   - [(in module bpy.ops.poselib)](bpy.ops.poselib.html#bpy.ops.poselib.asset_delete) - [asset_edit_metadata() (in module bpy.ops.brush)](bpy.ops.brush.html#bpy.ops.brush.asset_edit_metadata) - [asset_generate_preview() (bpy.types.ID method)](bpy.types.ID.html#bpy.types.ID.asset_generate_preview) - [asset_library_add() (in module bpy.ops.preferences)](bpy.ops.preferences.html#bpy.ops.preferences.asset_library_add) - [asset_library_reference (bpy.types.AssetShelf attribute)](bpy.types.AssetShelf.html#bpy.types.AssetShelf.asset_library_reference)   - [(bpy.types.FileAssetSelectParams attribute)](bpy.types.FileAssetSelectParams.html#bpy.types.FileAssetSelectParams.asset_library_reference)   - [(bpy.types.WorkSpace attribute)](bpy.types.WorkSpace.html#bpy.types.WorkSpace.asset_library_reference)   - [(in module bpy.context)](bpy.context.html#bpy.context.asset_library_reference) - [asset_library_remove() (in module bpy.ops.preferences)](bpy.ops.preferences.html#bpy.ops.preferences.asset_library_remove) - [asset_load_preview() (in module bpy.ops.brush)](bpy.ops.brush.html#bpy.ops.brush.asset_load_preview) - [asset_mark() (bpy.types.ID method)](bpy.types.ID.html#bpy.types.ID.asset_mark) - [asset_modify() (in module bpy.ops.poselib)](bpy.ops.poselib.html#bpy.ops.poselib.asset_modify) - [asset_poll() (bpy.types.AssetShelf class method)](bpy.types.AssetShelf.html#bpy.types.AssetShelf.asset_poll) - [asset_revert() (in module bpy.ops.brush)](bpy.ops.brush.html#bpy.ops.brush.asset_revert) - [asset_save() (in module bpy.ops.brush)](bpy.ops.brush.html#bpy.ops.brush.asset_save) - [asset_save_as() (in module bpy.ops.brush)](bpy.ops.brush.html#bpy.ops.brush.asset_save_as) - [ASSETBROWSER_UL_metadata_tags (class in bpy.types)](bpy.types.ASSETBROWSER_UL_metadata_tags.html#bpy.types.ASSETBROWSER_UL_metadata_tags) - [AssetLibraryCollection (class in bpy.types)](bpy.types.AssetLibraryCollection.html#bpy.types.AssetLibraryCollection) - [AssetLibraryReference (class in bpy.types)](bpy.types.AssetLibraryReference.html#bpy.types.AssetLibraryReference) - [AssetMetaData (class in bpy.types)](bpy.types.AssetMetaData.html#bpy.types.AssetMetaData) - [AssetMetaData.catalog_simple_name (in module bpy.types)](bpy.types.AssetMetaData.html#bpy.types.AssetMetaData.catalog_simple_name) - [AssetMetaData.tags (in module bpy.types)](bpy.types.AssetMetaData.html#bpy.types.AssetMetaData.tags) - [AssetRepresentation (class in bpy.types)](bpy.types.AssetRepresentation.html#bpy.types.AssetRepresentation) - [AssetRepresentation.full_library_path (in module bpy.types)](bpy.types.AssetRepresentation.html#bpy.types.AssetRepresentation.full_library_path) - [AssetRepresentation.full_path (in module bpy.types)](bpy.types.AssetRepresentation.html#bpy.types.AssetRepresentation.full_path) - [AssetRepresentation.id_type (in module bpy.types)](bpy.types.AssetRepresentation.html#bpy.types.AssetRepresentation.id_type) - [AssetRepresentation.local_id (in module bpy.types)](bpy.types.AssetRepresentation.html#bpy.types.AssetRepresentation.local_id) - [AssetRepresentation.metadata (in module bpy.types)](bpy.types.AssetRepresentation.html#bpy.types.AssetRepresentation.metadata) - [AssetRepresentation.name (in module bpy.types)](bpy.types.AssetRepresentation.html#bpy.types.AssetRepresentation.name) - [AssetShelf (class in bpy.types)](bpy.types.AssetShelf.html#bpy.types.AssetShelf) - [AssetTag (class in bpy.types)](bpy.types.AssetTag.html#bpy.types.AssetTag) - [AssetTags (class in bpy.types)](bpy.types.AssetTags.html#bpy.types.AssetTags) - [AssetWeakReference (class in bpy.types)](bpy.types.AssetWeakReference.html#bpy.types.AssetWeakReference) - [AssetWeakReference.asset_library_identifier (in module bpy.types)](bpy.types.AssetWeakReference.html#bpy.types.AssetWeakReference.asset_library_identifier) - [AssetWeakReference.asset_library_type (in module bpy.types)](bpy.types.AssetWeakReference.html#bpy.types.AssetWeakReference.asset_library_type) - [AssetWeakReference.relative_asset_identifier (in module bpy.types)](bpy.types.AssetWeakReference.html#bpy.types.AssetWeakReference.relative_asset_identifier) - [assign() (bpy.types.BoneCollection method)](bpy.types.BoneCollection.html#bpy.types.BoneCollection.assign) - [assign_action() (in module bpy.ops.asset)](bpy.ops.asset.html#bpy.ops.asset.assign_action) - [assign_default_button() (in module bpy.ops.ui)](bpy.ops.ui.html#bpy.ops.ui.assign_default_button) - [assign_property_defaults() (in module bpy.ops.object)](bpy.ops.object.html#bpy.ops.object.assign_property_defaults) - [assign_to_collection() (in module bpy.ops.armature)](bpy.ops.armature.html#bpy.ops.armature.assign_to_collection) - [associate_blend() (in module bpy.ops.preferences)](bpy.ops.preferences.html#bpy.ops.preferences.associate_blend) - [at_last (freestyle.types.freestyle.types.Interface0DIterator attribute)](freestyle.types.html#freestyle.types.freestyle.types.Interface0DIterator.at_last)   - [(freestyle.types.freestyle.types.StrokeVertexIterator attribute)](freestyle.types.html#freestyle.types.freestyle.types.StrokeVertexIterator.at_last) - [attach() (in module bpy.ops.node)](bpy.ops.node.html#bpy.ops.node.attach) - [attenuation (aud.aud.Handle attribute)](aud.html#aud.aud.Handle.attenuation)   - [(aud.aud.SequenceEntry attribute)](aud.html#aud.aud.SequenceEntry.attenuation)   - [(bpy.types.Speaker attribute)](bpy.types.Speaker.html#bpy.types.Speaker.attenuation) - [attr_add() (gpu.types.GPUVertFormat method)](gpu.types.html#gpu.types.GPUVertFormat.attr_add) - [attr_fill() (gpu.types.GPUVertBuf method)](gpu.types.html#gpu.types.GPUVertBuf.attr_fill) - [attr_from_name() (gpu.types.gpu.types.GPUShader method)](gpu.types.html#gpu.types.gpu.types.GPUShader.attr_from_name) - [Attribute (class in bpy.types)](bpy.types.Attribute.html#bpy.types.Attribute) - [attribute (freestyle.types.freestyle.types.StrokeVertex attribute)](freestyle.types.html#freestyle.types.freestyle.types.StrokeVertex.attribute) - [Attribute.data_type (in module bpy.types)](bpy.types.Attribute.html#bpy.types.Attribute.data_type) - [Attribute.domain (in module bpy.types)](bpy.types.Attribute.html#bpy.types.Attribute.domain) - [Attribute.is_internal (in module bpy.types)](bpy.types.Attribute.html#bpy.types.Attribute.is_internal) - [Attribute.is_required (in module bpy.types)](bpy.types.Attribute.html#bpy.types.Attribute.is_required) - [Attribute.storage_type (in module bpy.types)](bpy.types.Attribute.html#bpy.types.Attribute.storage_type) - [attribute_add() (in module bpy.ops.geometry)](bpy.ops.geometry.html#bpy.ops.geometry.attribute_add) - [attribute_convert() (in module bpy.ops.geometry)](bpy.ops.geometry.html#bpy.ops.geometry.attribute_convert) - [attribute_domain (bpy.types.NodeGeometryBakeItem attribute)](bpy.types.NodeGeometryBakeItem.html#bpy.types.NodeGeometryBakeItem.attribute_domain)   - [(bpy.types.NodeTreeInterfaceSocket attribute)](bpy.types.NodeTreeInterfaceSocket.html#bpy.types.NodeTreeInterfaceSocket.attribute_domain)   - [(bpy.types.SimulationStateItem attribute)](bpy.types.SimulationStateItem.html#bpy.types.SimulationStateItem.attribute_domain)   - [(bpy.types.SpaceSpreadsheet attribute)](bpy.types.SpaceSpreadsheet.html#bpy.types.SpaceSpreadsheet.attribute_domain) - [attribute_name (bpy.types.GeometryAttributeConstraint attribute)](bpy.types.GeometryAttributeConstraint.html#bpy.types.GeometryAttributeConstraint.attribute_name)   - [(bpy.types.ShaderNodeAttribute attribute)](bpy.types.ShaderNodeAttribute.html#bpy.types.ShaderNodeAttribute.attribute_name) - [attribute_node (bpy.types.ThemeNodeEditor attribute)](bpy.types.ThemeNodeEditor.html#bpy.types.ThemeNodeEditor.attribute_node) - [attribute_remove() (in module bpy.ops.geometry)](bpy.ops.geometry.html#bpy.ops.geometry.attribute_remove) - [attribute_set() (in module bpy.ops.curves)](bpy.ops.curves.html#bpy.ops.curves.attribute_set)   - [(in module bpy.ops.mesh)](bpy.ops.mesh.html#bpy.ops.mesh.attribute_set)   - [(in module bpy.ops.pointcloud)](bpy.ops.pointcloud.html#bpy.ops.pointcloud.attribute_set) - [attribute_type (bpy.types.ShaderNodeAttribute attribute)](bpy.types.ShaderNodeAttribute.html#bpy.types.ShaderNodeAttribute.attribute_type) - [AttributeGroupCurves (class in bpy.types)](bpy.types.AttributeGroupCurves.html#bpy.types.AttributeGroupCurves) - [AttributeGroupGreasePencil (class in bpy.types)](bpy.types.AttributeGroupGreasePencil.html#bpy.types.AttributeGroupGreasePencil) - [AttributeGroupGreasePencilDrawing (class in bpy.types)](bpy.types.AttributeGroupGreasePencilDrawing.html#bpy.types.AttributeGroupGreasePencilDrawing) - [AttributeGroupMesh (class in bpy.types)](bpy.types.AttributeGroupMesh.html#bpy.types.AttributeGroupMesh) - [AttributeGroupPointCloud (class in bpy.types)](bpy.types.AttributeGroupPointCloud.html#bpy.types.AttributeGroupPointCloud) - [attrs_info_get() (gpu.types.gpu.types.GPUShader method)](gpu.types.html#gpu.types.gpu.types.GPUShader.attrs_info_get) - aud   - [module](aud.html#module-aud) - [aud.AnimateableProperty (class in aud)](aud.html#aud.aud.AnimateableProperty) - [aud.Device (class in aud)](aud.html#aud.aud.Device) - [aud.DynamicMusic (class in aud)](aud.html#aud.aud.DynamicMusic) - [aud.error (class in aud)](aud.html#aud.aud.error) - [aud.Handle (class in aud)](aud.html#aud.aud.Handle) - [aud.HRTF (class in aud)](aud.html#aud.aud.HRTF) - [aud.ImpulseResponse (class in aud)](aud.html#aud.aud.ImpulseResponse) - [aud.PlaybackManager (class in aud)](aud.html#aud.aud.PlaybackManager) - [aud.Sequence (class in aud)](aud.html#aud.aud.Sequence) - [aud.SequenceEntry (class in aud)](aud.html#aud.aud.SequenceEntry) - [aud.Sound (class in aud)](aud.html#aud.aud.Sound) - [aud.Source (class in aud)](aud.html#aud.aud.Source) - [aud.ThreadPool (class in aud)](aud.html#aud.aud.ThreadPool) - [audio_bitrate (bpy.types.FFmpegSettings attribute)](bpy.types.FFmpegSettings.html#bpy.types.FFmpegSettings.audio_bitrate) - [audio_channels (bpy.types.FFmpegSettings attribute)](bpy.types.FFmpegSettings.html#bpy.types.FFmpegSettings.audio_channels)   - [(bpy.types.PreferencesSystem attribute)](bpy.types.PreferencesSystem.html#bpy.types.PreferencesSystem.audio_channels) - [audio_codec (bpy.types.FFmpegSettings attribute)](bpy.types.FFmpegSettings.html#bpy.types.FFmpegSettings.audio_codec) - [audio_device (bpy.types.PreferencesSystem attribute)](bpy.types.PreferencesSystem.html#bpy.types.PreferencesSystem.audio_device) - [audio_distance_model (bpy.types.Scene attribute)](bpy.types.Scene.html#bpy.types.Scene.audio_distance_model) - [audio_doppler_factor (bpy.types.Scene attribute)](bpy.types.Scene.html#bpy.types.Scene.audio_doppler_factor) - [audio_doppler_speed (bpy.types.Scene attribute)](bpy.types.Scene.html#bpy.types.Scene.audio_doppler_speed) - [audio_mixing_buffer (bpy.types.PreferencesSystem attribute)](bpy.types.PreferencesSystem.html#bpy.types.PreferencesSystem.audio_mixing_buffer) - [audio_mixrate (bpy.types.FFmpegSettings attribute)](bpy.types.FFmpegSettings.html#bpy.types.FFmpegSettings.audio_mixrate) - [audio_sample_format (bpy.types.PreferencesSystem attribute)](bpy.types.PreferencesSystem.html#bpy.types.PreferencesSystem.audio_sample_format) - [audio_sample_rate (bpy.types.PreferencesSystem attribute)](bpy.types.PreferencesSystem.html#bpy.types.PreferencesSystem.audio_sample_rate) - [audio_strip (bpy.types.ThemeSequenceEditor attribute)](bpy.types.ThemeSequenceEditor.html#bpy.types.ThemeSequenceEditor.audio_strip) - [audio_volume (bpy.types.FFmpegSettings attribute)](bpy.types.FFmpegSettings.html#bpy.types.FFmpegSettings.audio_volume)   - [(bpy.types.Scene attribute)](bpy.types.Scene.html#bpy.types.Scene.audio_volume) - [author (bpy.types.AssetMetaData attribute)](bpy.types.AssetMetaData.html#bpy.types.AssetMetaData.author) - [auto_keying_mode (bpy.types.PreferencesEdit attribute)](bpy.types.PreferencesEdit.html#bpy.types.PreferencesEdit.auto_keying_mode)   - [(bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.auto_keying_mode) - [auto_remove (bpy.types.NodeGeometryViewerItem attribute)](bpy.types.NodeGeometryViewerItem.html#bpy.types.NodeGeometryViewerItem.auto_remove) - [auto_save_time (bpy.types.PreferencesFilePaths attribute)](bpy.types.PreferencesFilePaths.html#bpy.types.PreferencesFilePaths.auto_save_time) - [auto_smooth_factor (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.auto_smooth_factor) - [auto_smoothing (bpy.types.FCurve attribute)](bpy.types.FCurve.html#bpy.types.FCurve.auto_smoothing) - [auto_texspace (bpy.types.Mesh attribute)](bpy.types.Mesh.html#bpy.types.Mesh.auto_texspace) - [autocomplete() (in module bpy.ops.console)](bpy.ops.console.html#bpy.ops.console.autocomplete)   - [(in module bpy.ops.text)](bpy.ops.text.html#bpy.ops.text.autocomplete) - [autoexec_fail (in module bpy.app)](bpy.app.html#bpy.app.autoexec_fail) - [autoexec_fail_message (in module bpy.app)](bpy.app.html#bpy.app.autoexec_fail_message) - [autoexec_fail_quiet (in module bpy.app)](bpy.app.html#bpy.app.autoexec_fail_quiet) - [autoexec_path_add() (in module bpy.ops.preferences)](bpy.ops.preferences.html#bpy.ops.preferences.autoexec_path_add) - [autoexec_path_remove() (in module bpy.ops.preferences)](bpy.ops.preferences.html#bpy.ops.preferences.autoexec_path_remove) - [automasking_boundary_edges_propagation_steps (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.automasking_boundary_edges_propagation_steps)   - [(bpy.types.Sculpt attribute)](bpy.types.Sculpt.html#bpy.types.Sculpt.automasking_boundary_edges_propagation_steps) - [automasking_cavity_blur_steps (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.automasking_cavity_blur_steps)   - [(bpy.types.Sculpt attribute)](bpy.types.Sculpt.html#bpy.types.Sculpt.automasking_cavity_blur_steps) - [automasking_cavity_factor (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.automasking_cavity_factor)   - [(bpy.types.Sculpt attribute)](bpy.types.Sculpt.html#bpy.types.Sculpt.automasking_cavity_factor) - [automasking_start_normal_falloff (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.automasking_start_normal_falloff)   - [(bpy.types.Sculpt attribute)](bpy.types.Sculpt.html#bpy.types.Sculpt.automasking_start_normal_falloff) - [automasking_start_normal_limit (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.automasking_start_normal_limit)   - [(bpy.types.Sculpt attribute)](bpy.types.Sculpt.html#bpy.types.Sculpt.automasking_start_normal_limit) - [automasking_view_normal_falloff (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.automasking_view_normal_falloff)   - [(bpy.types.Sculpt attribute)](bpy.types.Sculpt.html#bpy.types.Sculpt.automasking_view_normal_falloff) - [automasking_view_normal_limit (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.automasking_view_normal_limit)   - [(bpy.types.Sculpt attribute)](bpy.types.Sculpt.html#bpy.types.Sculpt.automasking_view_normal_limit) - [