You can save up to four zoom and pan settings for the Schematic and Player viewers. These view layouts can then be recalled with a hotkey or using the F1-F4 keys. This lets you switch back and forth between multiple areas of the viewer and is especially useful in the Schematic view.
View layouts are stored with the version of the composition. This allows for example, multiple Schematic viewers to share the same layouts. It also allows the layouts to be persistent from one UI preset to another and one session to another.
To set a view layout in a viewer:
When a view layout is saved for a Schematic viewer, a small number (1 to 4) appears in the view. This number represents the center point of that view layout.
To delete a saved view layout setting:
Composite saves the zoom/pan settings for viewers that have entered fullscreen mode so that the next time they go fullscreen, they maintain the same zoom/pan as before. When exiting fullscreen, the viewer's zoom/pan will be reset to the previous values.