The following text was written to the standard output stream when the ? program was executed from IntelliJ.
>>> help HELP - display a menu of commands DISPLAY - display the list of numbers PRINT - print a number (FIRST;LAST;nth) SWAP - exchange two elements (nth;mth) ADD - add a number to the list (FIRST;LAST) EXIT - terminate execution of the program >>> display The Cat In The Hat Went To The Store To Buy Mice >>> print first The >>> print last Mice >>> print 3 In >>> print 7 To >>> swap 2 12 >>> display The Mice In The Hat Went To The Store To Buy Cat >>> swap 9 11 >>> display The Mice In The Hat Went To The Buy To Store Cat >>> add first and >>> add last food >>> showwords ### Unrecognizable command: showwords >>> display and The Mice In The Hat Went To The Buy To Store Cat food >>> exit Process finished with exit code 0