11500 IF PEEK(222) = 6 THEN POKE 216,0:DL = 0: GOTO 10000
11510 GOTO 60000
11960 ON WHERE GOTO 3000,4000,6000,7000
11970 GOTO 90
11980 ONERR GOTO 60000
11981 PRINT CHR$(4)"PREFIX"PF$: GOTO 90
19990 REM <CTRL-0x0a>GET A KEY
20000 POKE -16368,0: WAIT -16384,128: GET K$
20010 IF K$ > = "a" AND K$ < = "z" THEN K$ = CHR$( ASC(K$) -32)
20020 RETURN
30000 DATA "MAP IS A COMMAND THAT CAN BE ADDED TO","PRODOS WHEN YOU ARE IN BASIC.","","TO USE IT, JUST:",""," -MAP","","AND IT WILL BE INSTALLED.","","FROM THEN ON, TYPE:",""," MAP OR MAP,S6,D1"
30001 DATA ""
30005 DATA "(S6 MEANS SLOT 6, D1 IS DRIVE 1.)",""
30010 DATA "THEN YOU WILL SEE A MAP OF USED BLOCKS","ON THAT VOLUME.","","IF YOU DON'T TELL MAP WHAT","SLOT AND DRIVE YOU WANT, IT WILL","READ THE LAST DRIVE USED.","","THAT'S ALL THERE IS TO IT!","HEY!"
61999 REM <CTRL-0x0a>CREDITS
62000 HOME : VTAB 10: HTAB 5: PRINT "MAP BY BILL TUDOR": HTAB 5: PRINT "DEMO BY TOM HALL": PRINT : HTAB 5: PRINT "MAP (C) 1990 SOFTDISK INC.": PRINT " ALL RIGHTS RESERVED.": PRINT " PUBLISHED ON SOFTDISK #100."