This function can be used in external code with OpenMaple or define_external.

MapleUserInfo displays information relevant to the procedure being executed.  This command is equivalent to the userinfo command.  Information is displayed when infolevel[fn] = level, or infolevel[all] = level.

$\mathrm{with}\left(\mathrm{ExternalCalling}\right)\:$

$\mathrm{dll}≔\mathrm{ExternalLibraryName}\left(''HelpExamples''\right)\:$

$\mathrm{ui}≔\mathrm{DefineExternal}\left(''MyFrontEnd''\,\mathrm{dll}\right)\:$

$\mathrm{ui}\left(1\,2\right)$

$\mathrm{infolevel}\left[\mathrm{MyFrontEnd}\right]≔3\:$

$\mathrm{ui}\left(1\,2\right)$

ui:   "entered with [1, 2]"