Weren't you the one who requested them?
Ctrl+PgDown    - Next File In List
Ctrl+PgUp        - Previous File In List
These were added in the most recent version of PageEdit.
From the PageEdit ChangeLog.txt and release announcement:
	Code:
	
PageEdit-1.9.10
  New Features
   - support building with Qt6
   - make Qt6 versions use their own ini file for settings
   - add Ctrl+PgUp/PgDown shortcuts to Prev and Next actions
  Bug Fixes
   - harden URLInterceptor to dead QWidget bugs in Qt
   - setMovable true on QToolbars to work around broken linux theme issues
   - update sigil gumbo version with upstream fixes
 Edit:  It was your suggestion:
https://www.mobileread.com/forums/sh...d.php?t=346353