Thanks to Jochen Merz I can now provide the QMenu (menu_rext) extension for download for free, including the original manual:
; 8.05 CHSL Fixed character colouring
; 8.04 Fixed QDOS compatibility broken in 8.03
; FSEL Allow up to 8 devices
; DSEL Now really allow up to 10 devices (buggy since 7.55)
; FSEL/DSEL Ensure device selection keystroke is unique
; LIST Fixed crash on editing of strings that are too big
; LIST Redraw selection keystroke after string edit operation
; 8.03 First release by Marcel Kilgus
; Fix QDT problem: LIST menu became too big with the move button. In
; this case we revert to the smaller menu of v7.65
; 8.02 Fix to run on all SMSQ/E systems, not just QPC
; 8.01 VIEW Upper-case word of nr of chars specifies nr of lines
; SYSS Two spurious characters in Job name list of daughter jobs fixed.
; 8.00 VIEW Application colour used to display the view listing
; SYSS SYS_SELECT$ properly implemented: History, Jobs & Things
; FSEL A DO on the Previous button calls up buffer history
; 7.69 VIEW Start string considered on Refresh
; 7.68 LIST Fixed the fact, that menu items were 2 chars too large
; 7.68 LIST Window move finally implemented :-)
; 7.67 LIST Autosize correct if selection keys given
; LIST Long titles fit even in small menus
; RPER Timeout for RPTR loop in upper word of colourway parameter
; ITSL Timeout added as for RPER; return value if timed out is -3
; RSTR Bit 6 set: negative sign allowed for numbers.
; ITSL Window move implemented.
; 7.66 LIST Fix in Edit mode
; 7.65 High Colour version.