The Copy command creates and returns a copy of the context menu module of which it is a member.

The object returned by Copy is an entirely new module, but it generates the same context menus as the original.  Copying a context menu module is useful when you want to add entries to a context menu without modifying the existing module.

with(ContextMenu):

copiedCM := CurrentContext[Copy]():

You can now freely customize the menu. Note, however, that added entries will not be visible in the Maple context-sensitive menus until you execute the Install(copiedCM) command.

copiedCM:-Entries:-Add("Divide by 3", "%EXPR / 3", integer);

$432$

Install(copiedCM);

Test:-GetGeneratedMenu(6);

$\left[''Apply\; a\; Command''\,''Assign\; to\; a\; Name''\,''Divisors''\,''Integer\; Factors''\,\left[''Plots''\,\left[''Plot\; Builder''\right]\right]\,''Prime\; Factors''\,''Sum\; of\; Squares''\,''Totient\; Function''\,''|''\,\left[''Integer\; Functions''\,\left[''Integer\; Base\; 10\; Log''\,''Integer\; Base\; 2\; Log''\,''Integer\; Natural\; Log''\right]\right]\,\left[''Queries''\,\left[''Is\; Mersenne\; Number?''\,''Is\; Perfect\; Square?''\,''Is\; Prime\; Number?''\,''Is\; Square\; Free?''\right]\right]\,\left[''Units''\,\left[\left[''Affix\; Unit''\,\left[\left[''Atomic''\,\left[''bohr''\,''electron''\,''electron\; mass''\,''electron\; per\; second''\,''electron*bohr''\,''electron*bohr^2/volt''\,''electron/bohr^2''\,''electron^2/hartree''\,''electron\_mass*bohr/second^2''\,''hartree''\,''hartree\; per\; second''\,''hartree/bohr''\,''hartree/tesla''\,''hartree/tesla*bohr^3''\,''hartree/tesla^2''\,''permittivity''\,''planck''\,''second''\,''tesla''\,''volt''\,''volt*second''\,''volt*second^2/electron''\,''volt/bohr''\right]\right]\,\left[''CGS''\,\left[''barye''\,''centimeter''\,''dyne''\,''erg''\,''erg/second''\,''g''\,''gram''\,''kyne''\,''radian''\,''second''\,''steradian''\right]\right]\,\left[''EMU''\,\left[''abampere''\,''abcoulomb''\,''abfarad''\,''abhenry''\,''abohm''\,''absiemens''\,''abtesla''\,''abvolt''\,''abweber''\,''barye''\,''centimeter''\,''dyne''\,''erg''\,''erg/second''\,''g''\,''gram''\,''joule''\,''kilogram''\,''kyne''\,''meter''\,''newton''\,''pascal''\,''radian''\,''second''\,''steradian''\,''watt''\right]\right]\,\left[''FPS''\,\left[''foot''\,''horsepower''\,''pound''\,''poundal''\,''poundal*foot''\,''poundforce/inch^2''\,''radian''\,''second''\,''steradian''\right]\right]\,\left[''MTS''\,\left[''kilojoule''\,''kilowatt''\,''meter''\,''pieze''\,''radian''\,''second''\,''steradian''\,''sthene''\,''tonne''\right]\right]\,\left[''SI''\,\left[''coulomb''\,''farad''\,''henry''\,''joule''\,''kilogram''\,''lumen''\,''lux''\,''meter''\,''newton''\,''ohm''\,''pascal''\,''radian''\,''second''\,''siemens''\,''steradian''\,''tesla''\,''volt''\,''watt''\,''weber''\right]\right]\right]\right]\right]\right]\,''|''\,\left[''Combinations/Permutations''\,\left[\left[''Combinations''\,\left[''Count''\,''Generate''\right]\right]\,''Fibonacci''\,\left[''Partitions''\,\left[''Count''\,''Generate''\,''Random''\right]\right]\,\left[''Permutations''\,\left[''Count''\,''Generate''\,''Random''\right]\right]\,''Power\; Set''\right]\right]\,\left[''Number\; Theory\; Functions''\,\left[''Calkin-Wilf\; Sequence''\,''Carmichael\; Function''\,''I-th\; Prime''\,''Imaginary\; Unit''\,''Inverse\; Totient\; Function''\,''Moebius\; Function''\,''Next\; Prime''\,''Next\; Safe\; Prime''\,''Number\; of\; Positive\; Divisors''\,''Number\; of\; Prime\; Factors''\,''Number\; of\; Primes''\,''Previous\; Prime''\,''Primitive\; Root''\,''Pseudo\; Primitive\; Root''\,''Sum\; of\; Divisors''\right]\right]\,\left[''Signal\; Processing''\,\left[\left[''Signal\; Generation''\,\left[''Generate\; Signal\; Using\; Sample\; Rate''\,''Generate\; Signal\; Using\; Time\; Range''\right]\right]\,\left[''Visualizations''\,\left[''Generate\; Periodogram\; Using\; Sample\; Rate''\,''Generate\; Periodogram\; Using\; Time\; Range''\,''Generate\; Signal\; Plot\; Using\; Sample\; Rate''\,''Generate\; Signal\; Plot\; Using\; Time\; Range''\right]\right]\right]\right]\,''|''\,''Divide\; by\; 3''\right]$