()0Y0BTC-PS/8 FOCAL, 1971?MB]BEC HFILE1.RE?MB&BJL C FOCAL.TM?MB,BTG 2.1?MTLCZS DU=FOUT(162)?MCGFJT "*** PS/8 DEVICE NAMES:"!!?MC/FTT "SYS:    SYSTEM DEVICE (DSK: IN DISK SYSTEM; DTA0: IN DECTAPE SYSTEM)"!?MDTF^T "DSK:    THE DISK IN DISK SYSTEMS; DECTAPE 
 IN DECTAPE SYSTEMS"!?MD3F(T :9,"(	DSK:	 IS ASSUMED IF A DEVICE IS NOT SPECIFIED)"!?MEHF2T "DTA0: - DTA7:   DECTAPE DRIVES"!?ME]F7T "LTA0: - LTA7:   LINCTAPE DRIVES"!?ME2F<T "MTA0: - MTA7:   MAGTAPE DRIVES"!?MFRGFT "PTR:    HIGH SPEED READER"!"PTP:    HIG
 SPEED PUNCH"!?MF"GKT "LPT:    LINE PRINTER"!?MW*GPT "TTY:    TERMINAL (MAY BE USED WITH OTHER DEVICES THROUGH 	ECHO	)"!!!!!?MGYHT :25,"FROM THE DSK:)"!?MXRH(T "OPEN INPUT TTY:,ECHO":23,"(RESTORES TERMINAL TO NORMAL FUNCTION)"!?MHHH<T " * * * "?MYJIFT "CT
L/Z IS THE END-OF-DATA-FILE CHARACTER.  ATTEMPTS TO READ PAST IT"!?MIWIZT "*OPEN INPUT [DEVICE:][FILE NAME][,ECHO]    (PREPARES TO READ A FILE)"!?MI]I
T !!!!?MJJL R HFILE2.RE 5.1?MI;DLT "FILES WITH MANY DEVICES."!!?MJ!DNT "PS/8 FOCAL ASSUMES .FC AND .FD AS NAME EXTENSIONS FOR PROGRAM AND"!?MKIDPT "DATA FILES RESPECTIVELY.  DATA FILES ARE SAVED IN STANDARD PS/8 ASCII"!?MK$DRT "FORMAT AND ARE EDIT AND TEC
-8 COMPATIBLE."!!?MLKDTT "THE TERMINAL (TTY:) IS PS/8 FOCAL	S NORMAL INPUT AND OUTPUT DEVICE."!?MT6DVT "THE 	OPEN INPUT	 COMMAND PERMITS SELECTING ANOTHER DEVICE FOR INPUT"!?MM[D\T "	,ECHO	 ADDED TO THE INPUT COMMANDS ECHOES THE INPUT DATA ON THE OUTPUT"!
MNED^T "DEVICE.  WHEN ADDED TO OUTPUT COMMANDS, IT CAUSES THE OUTPUT TO BE ECHOED"!?MNSD T "ON THE TERMINAL."!!?MN<D"T "	OUTPUT CLOSE	 EMPTIES THE OUTPUT BUFFER ONTO THE DEVICE AND SAVES THE"!?MO!D$T "FILE IF THE DEVICE IS FILE STRUCTURED (DISK OR MAGNETI
 TAPE)."!!?MPHD(T "THE 	OPEN INPUT TTY:,ECHO	 COMMAND WILL RESTORE THE TERMINAL AS THE"!?MP0D*T "INPUT DEVICE WITH ECHO.  AFTER AN ERROR OCCURS OR 	CTRL/P	 IS STRUCK,"!?MQSD,T "THE TERMINAL IS RESTORED AS BOTH INPUT AND OUTPUT DEVICE."!!?MQ:D.T "READING A
D WRITING CAN BE RESUMED WITH PREVIOUSLY OPENED NON-TTY:"!?MR$D0T "DEVICES THROUGH 	OPEN RESTORE INPUT	 AND 	OPEN RESTORE OUTPUT	 COMMANDS."!!?MU2D2T "NOTE:  WHEN WRITING FOCAL DATA FILES, IT IS NECESSARY TO INCLUDE A"!?MS3D8T "PRECEDING SPACE WILL BE AUT
MATICALLY 	TYPED	 IF THE INITIAL DIALOGUE"!?MB6D:T "RECEIVES AN ANSWER OF 	YES	 OR 	4,5	."!!!?MI)DJT !!!"*** THE EXPERIENCED PROGRAMMER MAY READ AND WRITE PS/8 COMPATIBLE DATA"!?MU^DXT "	OPEN OUTPUT	 DOES THE SAME FOR OUTPUT.  BE SURE TO CLOSE ONE OUTPUT"
?ML2DZT "FILE BEFORE OPENING ANOTHER."!!?MVZD4T "SPACE, COMMA, CARRIAGE RETURN OR OTHER DELIMITER PRECEDING ANY MINUS"!?MSKD6T "SIGNS, OTHERWISE THE NUMBER WILL APPEAR POSITIVE WHEN 	ASKED	.  A"!?MGJH^T "O I TABLE,ECHO":23,"(WILL ECHO ON OUTPUT DEVICE WHI
E READING 	TABLE.FD	"!?MX	HJT !!!"OPEN INPUT BLEEP":23,"(SWITCHES INPUT TO 	BLEEP.FD	 FILE ON DSK:)"!?MG?H2T "O I TTY:,E":23,"(ABBREVIATION)"!!?MWHTT "O I DTA4:RED":23,"(OPENS 	RED.FD	 FILE ON DECTAPE DRIVE 4)"!?MH/IPT :8,"WILL OUTPUT A 	
	 AND SWITCH INPUT TO THE TERMINAL. ";D 4.6;T !!?M"TL S HFILE1.RE;L C HFILE2.RE?M?

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