Click to switch on/off the following:

View » Preview Changed Pages in a Separate Window

Opens a separate preview window to display all pages that marked for inclusion in the release update pack.

View » Only show changed pages in Page Tree List

Changes the page or leaf list in the navigation pane to display only those pages or leaves that are in the release update pack. This option is only available for looseleaf partitions. Click again to restore the original view.

View » Show Boundary Markers when Editing Partition

This item is only enabled in a full looseleaf partition. When the partition document is edited, processing instructions identifying the leaf and boundary markers are inserted into the data.

View » Composition Log

Uses the Other Files editor to open the composition log file created by the most recent typesetting run.

View » Publish/Update Phase

Toggles the current partition view from the current update phase to the previous publish phase and vice versa.