user: What is U and how is it used in Blender Python scripting?

assistant: es.SoftBodySettings.html#bpy.types.SoftBodySettings.use_self_collision) - [use_self_effect (bpy.types.ParticleSettings attribute)](bpy.types.ParticleSettings.html#bpy.types.ParticleSettings.use_self_effect) - [use_self_intersection_check (bpy.types.MaskSpline attribute)](bpy.types.MaskSpline.html#bpy.types.MaskSpline.use_self_intersection_check) - [use_separate (bpy.types.UnitSettings attribute)](bpy.types.UnitSettings.html#bpy.types.UnitSettings.use_separate) - [use_sequencer (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_sequencer) - [use_sequencer_override_scene_strip (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_sequencer_override_scene_strip) - [use_settings_outline (bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.use_settings_outline) - [use_settings_postprocess (bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.use_settings_postprocess) - [use_settings_random (bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.use_settings_random) - [use_settings_stabilizer (bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.use_settings_stabilizer) - [use_sewing_springs (bpy.types.ClothSettings attribute)](bpy.types.ClothSettings.html#bpy.types.ClothSettings.use_sewing_springs) - [use_shader_node_previews (bpy.types.PreferencesExperimental attribute)](bpy.types.PreferencesExperimental.html#bpy.types.PreferencesExperimental.use_shader_node_previews) - [use_shading_nodes() (in module bpy.ops.cycles)](bpy.ops.cycles.html#bpy.ops.cycles.use_shading_nodes) - [use_shadow (bpy.types.GreasePencilLineartModifier attribute)](bpy.types.GreasePencilLineartModifier.html#bpy.types.GreasePencilLineartModifier.use_shadow)   - [(bpy.types.Light attribute)](bpy.types.Light.html#bpy.types.Light.use_shadow)   - [(bpy.types.TextStrip attribute)](bpy.types.TextStrip.html#bpy.types.TextStrip.use_shadow) - [use_shadow_jitter (bpy.types.AreaLight attribute)](bpy.types.AreaLight.html#bpy.types.AreaLight.use_shadow_jitter)   - [(bpy.types.PointLight attribute)](bpy.types.PointLight.html#bpy.types.PointLight.use_shadow_jitter)   - [(bpy.types.SpotLight attribute)](bpy.types.SpotLight.html#bpy.types.SpotLight.use_shadow_jitter)   - [(bpy.types.SunLight attribute)](bpy.types.SunLight.html#bpy.types.SunLight.use_shadow_jitter) - [use_shadow_jitter_viewport (bpy.types.SceneEEVEE attribute)](bpy.types.SceneEEVEE.html#bpy.types.SceneEEVEE.use_shadow_jitter_viewport) - [use_shadows (bpy.types.SceneEEVEE attribute)](bpy.types.SceneEEVEE.html#bpy.types.SceneEEVEE.use_shadows) - [use_shape_interpolate (bpy.types.BrushCurvesSculptSettings attribute)](bpy.types.BrushCurvesSculptSettings.html#bpy.types.BrushCurvesSculptSettings.use_shape_interpolate) - [use_shape_key_edit_mode (bpy.types.Object attribute)](bpy.types.Object.html#bpy.types.Object.use_shape_key_edit_mode) - [use_shrink (bpy.types.DynamicPaintSurface attribute)](bpy.types.DynamicPaintSurface.html#bpy.types.DynamicPaintSurface.use_shrink) - [use_sidebyside_crosseyed (bpy.types.Stereo3dDisplay attribute)](bpy.types.Stereo3dDisplay.html#bpy.types.Stereo3dDisplay.use_sidebyside_crosseyed)   - [(bpy.types.Stereo3dFormat attribute)](bpy.types.Stereo3dFormat.html#bpy.types.Stereo3dFormat.use_sidebyside_crosseyed) - [use_simplify (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_simplify) - [use_simplify_normals (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_simplify_normals) - [use_simulation_cache (bpy.types.Object attribute)](bpy.types.Object.html#bpy.types.Object.use_simulation_cache) - [use_single_layer (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_single_layer) - [use_size (bpy.types.ExplodeModifier attribute)](bpy.types.ExplodeModifier.html#bpy.types.ExplodeModifier.use_size)   - [(bpy.types.ParticleInstanceModifier attribute)](bpy.types.ParticleInstanceModifier.html#bpy.types.ParticleInstanceModifier.use_size) - [use_size_deflect (bpy.types.ParticleSettings attribute)](bpy.types.ParticleSettings.html#bpy.types.ParticleSettings.use_size_deflect) - [use_sky (bpy.types.ViewLayer attribute)](bpy.types.ViewLayer.html#bpy.types.ViewLayer.use_sky) - [use_slice (bpy.types.FluidDomainSettings attribute)](bpy.types.FluidDomainSettings.html#bpy.types.FluidDomainSettings.use_slice)   - [(bpy.types.VolumeDisplay attribute)](bpy.types.VolumeDisplay.html#bpy.types.VolumeDisplay.use_slice) - [use_small_caps (bpy.types.TextCharacterFormat attribute)](bpy.types.TextCharacterFormat.html#bpy.types.TextCharacterFormat.use_small_caps) - [use_smoke_density (bpy.types.FieldSettings attribute)](bpy.types.FieldSettings.html#bpy.types.FieldSettings.use_smoke_density) - [use_smooth (bpy.types.MaskModifier attribute)](bpy.types.MaskModifier.html#bpy.types.MaskModifier.use_smooth)   - [(bpy.types.MeshPolygon attribute)](bpy.types.MeshPolygon.html#bpy.types.MeshPolygon.use_smooth)   - [(bpy.types.Spline attribute)](bpy.types.Spline.html#bpy.types.Spline.use_smooth) - [use_smooth_ends (bpy.types.GreasePencilSmoothModifier attribute)](bpy.types.GreasePencilSmoothModifier.html#bpy.types.GreasePencilSmoothModifier.use_smooth_ends) - [use_smooth_shade (bpy.types.RemeshModifier attribute)](bpy.types.RemeshModifier.html#bpy.types.RemeshModifier.use_smooth_shade)   - [(bpy.types.ScrewModifier attribute)](bpy.types.ScrewModifier.html#bpy.types.ScrewModifier.use_smooth_shade)   - [(bpy.types.SkinModifier attribute)](bpy.types.SkinModifier.html#bpy.types.SkinModifier.use_smooth_shade)   - [(bpy.types.VolumeToMeshModifier attribute)](bpy.types.VolumeToMeshModifier.html#bpy.types.VolumeToMeshModifier.use_smooth_shade) - [use_smooth_stroke (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.use_smooth_stroke) - [use_smoothness (bpy.types.FreestyleSettings attribute)](bpy.types.FreestyleSettings.html#bpy.types.FreestyleSettings.use_smoothness) - [use_smudge (bpy.types.DynamicPaintBrushSettings attribute)](bpy.types.DynamicPaintBrushSettings.html#bpy.types.DynamicPaintBrushSettings.use_smudge) - [use_snap (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap) - [use_snap_align_rotation (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_align_rotation) - [use_snap_anim (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_anim) - [use_snap_backface_culling (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_backface_culling) - [use_snap_current_frame_to_strips (bpy.types.SequencerToolSettings attribute)](bpy.types.SequencerToolSettings.html#bpy.types.SequencerToolSettings.use_snap_current_frame_to_strips) - [use_snap_driver (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_driver) - [use_snap_driver_absolute (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_driver_absolute) - [use_snap_edit (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_edit) - [use_snap_grid_absolute (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_grid_absolute) - [use_snap_node (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_node) - [use_snap_nonedit (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_nonedit) - [use_snap_peel_object (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_peel_object) - [use_snap_playhead (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_playhead) - [use_snap_rotate (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_rotate) - [use_snap_scale (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_scale) - [use_snap_selectable (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_selectable) - [use_snap_self (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_self) - [use_snap_sequencer (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_sequencer) - [use_snap_time_absolute (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_time_absolute) - [use_snap_to_same_target (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_to_same_target) - [use_snap_translate (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_translate) - [use_snap_uv (bpy.types.ToolSettings attribute)](bpy.types.ToolSettings.html#bpy.types.ToolSettings.use_snap_uv) - [use_snapping (bpy.types.GPencilSculptGuide attribute)](bpy.types.GPencilSculptGuide.html#bpy.types.GPencilSculptGuide.use_snapping) - [use_soft_falloff (bpy.types.PointLight attribute)](bpy.types.PointLight.html#bpy.types.PointLight.use_soft_falloff)   - [(bpy.types.SpotLight attribute)](bpy.types.SpotLight.html#bpy.types.SpotLight.use_soft_falloff) - [use_solid (bpy.types.ViewLayer attribute)](bpy.types.ViewLayer.html#bpy.types.ViewLayer.use_solid) - [use_sort_alpha (bpy.types.SpaceOutliner attribute)](bpy.types.SpaceOutliner.html#bpy.types.SpaceOutliner.use_sort_alpha) - [use_sort_invert (bpy.types.FileSelectParams attribute)](bpy.types.FileSelectParams.html#bpy.types.FileSelectParams.use_sort_invert) - [use_sorting (bpy.types.FreestyleLineStyle attribute)](bpy.types.FreestyleLineStyle.html#bpy.types.FreestyleLineStyle.use_sorting) - [use_space (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.use_space) - [use_space_attenuation (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.use_space_attenuation) - [use_sparse_bind (bpy.types.SurfaceDeformModifier attribute)](bpy.types.SurfaceDeformModifier.html#bpy.types.SurfaceDeformModifier.use_sparse_bind) - [use_speed_vectors (bpy.types.FluidDomainSettings attribute)](bpy.types.FluidDomainSettings.html#bpy.types.FluidDomainSettings.use_speed_vectors) - [use_spherical_stereo (bpy.types.CameraStereoData attribute)](bpy.types.CameraStereoData.html#bpy.types.CameraStereoData.use_spherical_stereo) - [use_spherical_stereo() (bpy.types.RenderEngine method)](bpy.types.RenderEngine.html#bpy.types.RenderEngine.use_spherical_stereo) - [use_split_impulse (bpy.types.RigidBodyWorld attribute)](bpy.types.RigidBodyWorld.html#bpy.types.RigidBodyWorld.use_split_impulse) - [use_split_length (bpy.types.FreestyleLineStyle attribute)](bpy.types.FreestyleLineStyle.html#bpy.types.FreestyleLineStyle.use_split_length) - [use_split_materials (bpy.types.BakeSettings attribute)](bpy.types.BakeSettings.html#bpy.types.BakeSettings.use_split_materials) - [use_split_pattern (bpy.types.FreestyleLineStyle attribute)](bpy.types.FreestyleLineStyle.html#bpy.types.FreestyleLineStyle.use_split_pattern) - [use_spray (bpy.types.OceanModifier attribute)](bpy.types.OceanModifier.html#bpy.types.OceanModifier.use_spray) - [use_spray_particles (bpy.types.FluidDomainSettings attribute)](bpy.types.FluidDomainSettings.html#bpy.types.FluidDomainSettings.use_spray_particles) - [use_spread (bpy.types.DynamicPaintSurface attribute)](bpy.types.DynamicPaintSurface.html#bpy.types.DynamicPaintSurface.use_spread) - [use_spring_ang_x (bpy.types.RigidBodyConstraint attribute)](bpy.types.RigidBodyConstraint.html#bpy.types.RigidBodyConstraint.use_spring_ang_x) - [use_spring_ang_y (bpy.types.RigidBodyConstraint attribute)](bpy.types.RigidBodyConstraint.html#bpy.types.RigidBodyConstraint.use_spring_ang_y) - [use_spring_ang_z (bpy.types.RigidBodyConstraint attribute)](bpy.types.RigidBodyConstraint.html#bpy.types.RigidBodyConstraint.use_spring_ang_z) - [use_spring_x (bpy.types.RigidBodyConstraint attribute)](bpy.types.RigidBodyConstraint.html#bpy.types.RigidBodyConstraint.use_spring_x) - [use_spring_y (bpy.types.RigidBodyConstraint attribute)](bpy.types.RigidBodyConstraint.html#bpy.types.RigidBodyConstraint.use_spring_y) - [use_spring_z (bpy.types.RigidBodyConstraint attribute)](bpy.types.RigidBodyConstraint.html#bpy.types.RigidBodyConstraint.use_spring_z) - [use_square (bpy.types.SpotLight attribute)](bpy.types.SpotLight.html#bpy.types.SpotLight.use_square) - [use_squeezed_frame (bpy.types.Stereo3dFormat attribute)](bpy.types.Stereo3dFormat.html#bpy.types.Stereo3dFormat.use_squeezed_frame) - [use_sss_translucency (bpy.types.Material attribute)](bpy.types.Material.html#bpy.types.Material.use_sss_translucency) - [use_stabilize_rotation (bpy.types.MovieTrackingStabilization attribute)](bpy.types.MovieTrackingStabilization.html#bpy.types.MovieTrackingStabilization.use_stabilize_rotation) - [use_stabilize_scale (bpy.types.MovieTrackingStabilization attribute)](bpy.types.MovieTrackingStabilization.html#bpy.types.MovieTrackingStabilization.use_stabilize_scale) - [use_stamp (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp) - [use_stamp_camera (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_camera) - [use_stamp_date (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_date) - [use_stamp_filename (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_filename) - [use_stamp_frame (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_frame) - [use_stamp_frame_range (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_frame_range) - [use_stamp_hostname (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_hostname) - [use_stamp_labels (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_labels) - [use_stamp_lens (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_lens) - [use_stamp_marker (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_marker) - [use_stamp_memory (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_memory) - [use_stamp_note (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_note)   - [(bpy.types.Scene attribute)](bpy.types.Scene.html#bpy.types.Scene.use_stamp_note) - [use_stamp_render_time (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_render_time) - [use_stamp_scene (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_scene) - [use_stamp_sequencer_strip (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_sequencer_strip) - [use_stamp_time (bpy.types.RenderSettings attribute)](bpy.types.RenderSettings.html#bpy.types.RenderSettings.use_stamp_time) - [use_start_deactivated (bpy.types.RigidBodyObject attribute)](bpy.types.RigidBodyObject.html#bpy.types.RigidBodyObject.use_start_deactivated) - [use_stencil_layer (bpy.types.ImagePaint attribute)](bpy.types.ImagePaint.html#bpy.types.ImagePaint.use_stencil_layer) - [use_stiff_quads (bpy.types.SoftBodySettings attribute)](bpy.types.SoftBodySettings.html#bpy.types.SoftBodySettings.use_stiff_quads) - [use_strand (bpy.types.ViewLayer attribute)](bpy.types.ViewLayer.html#bpy.types.ViewLayer.use_strand) - [use_strand_primitive (bpy.types.ParticleSettings attribute)](bpy.types.ParticleSettings.html#bpy.types.ParticleSettings.use_strand_primitive) - [use_strength_pressure (bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.use_strength_pressure) - [use_stretch (bpy.types.Curve attribute)](bpy.types.Curve.html#bpy.types.Curve.use_stretch)   - [(bpy.types.KinematicConstraint attribute)](bpy.types.KinematicConstraint.html#bpy.types.KinematicConstraint.use_stretch) - [use_stretch_u (bpy.types.ScrewModifier attribute)](bpy.types.ScrewModifier.html#bpy.types.ScrewModifier.use_stretch_u) - [use_stretch_v (bpy.types.ScrewModifier attribute)](bpy.types.ScrewModifier.html#bpy.types.ScrewModifier.use_stretch_v) - [use_stroke_endpoints (bpy.types.CurvePaintSettings attribute)](bpy.types.CurvePaintSettings.html#bpy.types.CurvePaintSettings.use_stroke_endpoints) - [use_stroke_holdout (bpy.types.MaterialGPencilStyle attribute)](bpy.types.MaterialGPencilStyle.html#bpy.types.MaterialGPencilStyle.use_stroke_holdout) - [use_stroke_random_hue (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.use_stroke_random_hue)   - [(bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.use_stroke_random_hue)   - [(bpy.types.UnifiedPaintSettings attribute)](bpy.types.UnifiedPaintSettings.html#bpy.types.UnifiedPaintSettings.use_stroke_random_hue) - [use_stroke_random_radius (bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.use_stroke_random_radius) - [use_stroke_random_sat (bpy.types.Brush attribute)](bpy.types.Brush.html#bpy.types.Brush.use_stroke_random_sat)   - [(bpy.types.BrushGpencilSettings attribute)](bpy.types.BrushGpencilSettings.html#bpy.types.BrushGpencilSettings.use_stroke_random_sat)   - [(bpy.types.UnifiedPaintSettings at