These QEdit macros provide an alternative to the "bookmarking" macros
in BOOKxx.QM. The JMPPOS macros allow the user to set "Position
Markers" at various points in a file, then jump quickly to the next
or previous position marker from anywhere in the file. Position
markers are "labels" that are placed any where on separate lines in a
file enabling us to jump to the next or previous position marker in
any of the currently loaded files (that is, jump across files).
Version changes:
 1.1     May 19, 1991  Modified @5 and @6 to use scratch buffer test
                       for all file and cursor position cases.
 1.1a    May 22, 1991  Shortened @1 and @2 one byte each.