The Make a Selection from the Menu routine lets you move between
    the menu choices using the arrow keys and lets you make a
    selection by pressing the Return key.

    Format

      SMG$SELECT_FROM_MENU  keyboard-id ,display-id

                            ,selected-choice-number

                            [,default-choice-number] [,flags]

                            [,help-library] [,timeout]

                            [,word-terminator-code]

                            [,selected-choice-string]

                            [,rendition-set] [,rendition-complement]