Windows in the pager are decorated accordingly to MyStyle definitions
If you never defined those MyStyles, Pager will default to same styles as used for actual windows.
The Pager can be used to change the viewport in the current desktop or to change desktops (left mouse button), or to move windows around (middle mouse button).
Windows in the pager are decorated accordingly to MyStyle definitions:
"*PagerUWindowStyle" - for unfocused windows,
"*PagerFWindowStyle" - for focused windows and
"*PagerSWindowStyle" - for sticky windows.
AfterStep Documentation - October 2005 ( 80% complete )