Thank you fatmac
Debian apt autoremove & apt remove firefox
WOW! 118 files (most were orphans).
Zutty is/was another KDE file-editor. Must be a menu 'straggler'.
LibreOfficeStartCenter is NOT part of LibreOffice. StartCenter is an add-on from ???-user-group.
Like a ramora-fish, when I whacked LibreOffice, it became another straggler.
Did not know KDE was a fully-developed system.
Q4os made a nice desktop (like old MINT/Xfce) with all the KDE bells & whistles, then added Awfice + Firefox atop Debian. Plus its FAST !!! Cold boot this iMAC takes 100 seconds, plus Debian/Q4os, total +-200 seconds. But, from hibernate to logon to desktop 30seconds !
I'll slowly learn to drive this new electric vehicle !
I helped develop "smit" for TinyCore Startup,Clock,Shutdown,etc.
Still have it on a TranscendCompactFlash133X ("X" means 133 times faster that a 3" diskette