100 TEXT : HOME :D$ = CHR$(4): PRINT D$"CATALOG":B = PEEK(37) -2: IF B >22 THEN B = 22
110 T = 0:CH = 4: FOR CV = 0 TO 23: GOSUB 1000: IF C < >160 THEN POKE P -1,219: POKE P,T +193: POKE P +1,221:T = T +1:S = CV
120 NEXT CV: VTAB 24:A$ = "TYPE LETTER TO RUN, OR LOAD=1 LOCK=2 UNLOCK=3 DELETE=4 EXIT=5..."
130 B$ = "RUN": HTAB 1: PRINT LEFT$(A$,39);:A$ = MID$ (A$,2) + LEFT$(A$,1):K = PEEK( -16384): IF K <128 THEN FOR K = 1 TO 75: NEXT K:K = FRE(0): GOTO 130
140 POKE -16368,0:K = K -176: IF K <1 OR K >5 THEN GOTO 300
200 HTAB 1: CALL -868: IF K = 5 THEN END
210 PRINT "PRESS 'LETTER'YOU WISH TO ";: IF K = 1 THEN B$ = "LOAD"
220 IF K = 2 THEN B$ = "LOCK"
230 IF K = 3 THEN B$ = "UNLOCK"
240 IF K = 4 THEN B$ = "DELETE": FLASH
250 PRINT B$;: CALL -198: NORMAL : GET K$:K = ASC(K$) -48
300 IF K <17 OR K >T +16 THEN GOTO 130
310 CH = 1:CV = S -T +K -16: GOSUB 1000: IF C = 194 AND (B$ = "RUN" OR B$ = "LOAD") THEN B$ = "B" +B$
320 FOR CH = 6 TO 39: GOSUB 1000:B$ = B$ + CHR$(C): NEXT CH: HTAB 1: CALL -868: PRINT B$: PRINT D$;B$: GOTO 100