"??" WHICH IS xedit's WAY OF TELLING YOU IT IS WAITING FOR YOU TO TYPE A 

 COMMAND. THIS SIGNAL IS ANALOGOUS TO THE / NOTATION IN batch. 



xon - THIS IS A HANDY SYSTEM COMMAND THAT ENABLES YOU TO STOP AND RESUME 

 LENGTHY COMPUTER OUTPUT ON YOUR SCREEN. WHEN YOU ARE IN batch MODE, TYPE 

 xon AND A CR BEFORE RUNNING A LONG PROGRAM. TO STOP A FILE FROM 

 "SCROLLING" ENDLESS DATA, PRESS YOUR Ctrl AND s KEYS SIMULTANEOUSLY; TO 

 RESUME THE DISPLAY, PRESS Ctrl AND q KEYS SIMULTANEOUSLY. 



/ THIS SLASH IS THE COMPUTER'S NOTATION TELLING YOU IT IS WAITING FOR YOUR 

 INSTRUCTIONS. REMEMBER TO ENTER A CARRIAGE RETURN [CR] AFTER YOUR 

 INSTRUCTIONS. 



- THIS DASH IS THE COMPUTER CHARACTER FOR begin. IT NOTIFIES THE COMPUTER TO 

 PREPARE TO RUN A PARTICULAR LIAM PROGRAM, FOR EXAMPLE, -MAPUM,,YOUR 

 FILENAME. 



45 



