3.4.  Prompter

     Many times	during the play	of the game  it	 is  desired
that  a	player enter a line from the keyboard.	Some sort of
prompting should be done in order to inform the	player	that
input  is desired.  The	ADL programmer may specify a Routine
ID to do this prompting.   This	 routine  is  known  as	 the
prompter and is	set by using the $prompt routine.