200 PRINT "DO YOU WISH INSTRUCTIONS (Y/N)";: INPUT I$
210 IF I$ < >"Y" THEN RETURN
215 TEXT : CALL -936
220 PRINT "WHEN TYPING FILE NAMES, THE USE OF SPECIAL KEYS SUCH AS 'ESC', THE LEFT-ARROW AND RIGHT-ARROW KEYS, AND CERTAIN KEYS TYPED WITH THE 'CTRL' KEY ('CONTROL' CHARACTERS 'CTRL-C', 'CTRL-H') MAY HAVE UNEXPECTED EFFECTS."
225 FOR T = 1 TO 7000: NEXT T: PRINT
230 PRINT "IF A FILE NAME CONTAINS CONTROL CHARACTERS, YOU WON'T SEE THEM PRINTED, BUT THEY MUST BE TYPED TO USE OR DELETE THE FILE."
235 FOR T = 1 TO 4600: NEXT T: PRINT
240 PRINT "THE FOLLOWING APPLESOFT PROGRAM CAN BE USED TO FIND ANY HIDDEN CHARACTERS EXCEPT 'CTRL-M' (RETURN), ESC, 'CTRL-H' (LEFT-ARROW) AND 'CTRL-U (RIGHT-ARROW)."
245 FOR T = 1 TO 4200: NEXT T: PRINT
250 PRINT "IF YOU SUSPECT YOU MAY HAVE ACCIDENTALLY INTRODUCED A FILE NAME, RUN THIS PROGRAM."
255 FOR T = 1 TO 2800: NEXT T: PRINT
260 PRINT "THE APPLESOFT PROMPT (]) WILL BE DISPLAYED."
265 FOR T = 1 TO 1400: NEXT T: PRINT
270 PRINT "NEXT TYPE 'CATALOG' AND YOU WILL GET A LIST OF ALL THE FILES, WITH ANY CONTROL CHARACTERS SHOWN AS ";: FLASH : PRINT "FLASHING";: NORMAL : PRINT " CHARACTERS."
275 FOR T = 1 TO 4200: NEXT T: PRINT
280 PRINT "CONTROL CHARACTERS IN PROGRAM LISTINGS CAN ALSO BE FOUND THIS WAY."
285 FOR T = 1 TO 2400: NEXT T: PRINT
290 PRINT "TO REINSTATE NORMAL PRINTOUTS, TYPE 'PR#0'."
295 FOR T = 1 TO 5000: NEXT T: PRINT "<CTRL-G><CTRL-G><CTRL-G><CTRL-G><CTRL-G>": RETURN