Set the viewport scaling. Either use the dropdown to set a value or type in a value.
Go to the beginning of the Playback Range.
Go back one frame.
Go forward one frame.
Go to the end of the Playback Range.
This icon will turn green to indicate that the Quicklist tag is active and affecting what is being displayed in the Viewport.
Snap Shapes to grids, other shapes, the composition etc.
Grid Snapping - enable/ disable grid snapping.
Grid Size - set the size of the grid (px).
Snapping Threshold - set the distance from a grid (in screen pixels)
within which snapping will happen.
Ruler Guide Snapping - enable/ disable snapping to rulers.
Composition Snapping - enable/ disable snapping to the centre of the composition.
Bounding Box Snapping - enable/ disable snapping to bounding boxes
When enabled the User Interface will update during playback. This includes elements like the playhead in the Scene Window, the Equalizer on the Sound Behaviour and attributes in the Attribute Editor. Note that this may occasionally have a detrimental affect on playback speed.
Enable/ disable playback caching.
When enabled, a white border will be drawn around the Composition Boundary.
Use Checkerboard - when checked, a checkerboard will display where there is transparency. Note - all Compositions have a Composition Background. If the Alpha is set to 255 checking this setting will have no effect (there is no transparency).
Set Composition Background Alpha to 0 - clicking this button will set the Composition Background Alpha to 0.
Draw masks in the Viewport.
Show Clipping Masks - when enabled, masks connected to selected Shapes will be drawn as an outline in the Viewport.
Fill - when enabled, a green overlay will appear in the Viewport whenever a shape with a mask connected is selected. The green area represents the zone in which your shape will be visible.
Draw Debug Information - draw (non-renderable) diagnostics information in the viewport.
Viewport Backend - set the type of viewport renderer.
GPU - use GPU.
CPU - use CPU.
Show Drawables - control the display of drawables (Falloffs, Nulls)
Always - always show drawables.
Except during Playback - show drawables except during playback.
Never - never show drawables.
Shape Depth Debug - can be used to diagnose the depth of certain Shapes within Sub Meshes. Useful for things like SVG artwork.