C-PS/8 FOCAL, 1971
 1.05 C SUMCOM.RE
 1.10 L C FOCAL.TM
 1.20 G 2.1
 1.30 S D=FOUT(162)
 2.10 T "             ELEMENTARY COMMANDS"!!
 2.12 T "*ASK <X> ..........ACCEPT VALUE OF X FROM INPUT DEVICE"!
 2.14 T "*COMMENT ..........................IGNORE REST OF LINE"!
 2.16 T "*DO [LINE OR GROUP NUMBER] ............SUBROUTINE CALL"!
 2.18 T "*ERASE .................................ZERO VARIABLES"!
 2.20 T "*ERASE <LINE OR GROUP NUMBER> ....DELETE LINE OR GROUP"!
 2.22 T "*ERASE ALL .............DELETE ENTIRE INDIRECT PROGRAM"!
 2.24 T "*FOR X=E1[,E2],E3; COMMAND REPEATED (E3-E1)/E2+1 TIMES"!
 2.26 T "*GO [L1] ...........START PROGRAM EXECUTION AT LINE L1"!
 2.28 T "*IF (E1)L1[,L2,L3] ...............BRANCH ON SIGN OF E1"!
 2.30 T "*MODIFY <L1> .............................EDIT LINE L1"!
 2.32 T "*QUIT ..................................STOP EXECUTION"!
 2.34 T "*RETURN ..........TERMINATE 	DO	 OR 	GOSUB	 SUBROUTINE"!
 2.36 T "*SET X=<E1> ...............ASSIGN VALUE E1 TO VARIABLE"!
 2.38 T "*TYPE [NUMBERS, E1, ";D 1.3;T "TEXT";D 1.3;T ", !, , :, $ OR %] ...OUTPUT"!
 2.40 T "*WRITE [LINE OR GROUP NUMBER] ............LIST PROGRAM"!!!
 2.42 T "          LIBRARY AND FILE COMMANDS"!!
 2.44 T "*LIBRARY CALL [DEVICE:]<PROGRAM> .........LOAD PROGRAM"!
 2.46 T "*LIBRARY DELETE [DEVICE:]<PROGRAM> .....UNSAVE PROGRAM"!
 2.48 T "*LIBRARY GOSUB [DEVICE:]<PROGRAM> [G1] SUBROUTINE CALL"!
 2.50 T "*LIBRARY LIST [DEVICE:][FIRST LISTED FILE] ....CATALOG"!
 2.52 T "*LIBRARY RUN [DEVICE:]<PROGRAM> [L1] ............CHAIN"!
 2.54 T "*LIBRARY SAVE [DEVICE:]<PROGRAM> .........SAVE PROGRAM"!
 2.56 T "*LIBRARY EXIT ..................RETURN TO PS/8 MONITOR"!!
 2.58 T "*OPEN INPUT [DEVICE:][FILE][,ECHO] ....PREPARE TO READ"!
 2.60 T "*OPEN OUTPUT [DEVICE:][FILE][,ECHO] ..PREPARE TO WRITE"!
 2.61 T "*OPEN RESTORE INPUT[,ECHO] .....RESUME INPUT FROM FILE"!
 2.62 T "*OPEN RESTORE OUTPUT[,ECHO] .....RESUME OUTPUT TO FILE"!
 2.63 T "*OUTPUT CLOSE ......OUTPUTS BUFFER; CLOSES OUTPUT FILE"!!
 2.64 T "---INPUT---,ECHO ........ECHO INPUT ONTO OUTPUT DEVICE"!
 2.65 T "---OUTPUT---,ECHO ...........ECHO OUTPUT ONTO TERMINAL"!
 2.66 T ".FC & .FD ARE THE PROGRAM & DATA FILE NAME EXTENSIONS."!!
 2.68 T "                  - - - - -"!!
 2.69 T "<> ENCLOSE REQUIRED TERMS.  [] ENCLOSE OPTIONAL TERMS."!
 2.70 T "ONE LETTER ABBREVIATIONS MAY BE USED AS COMMAND WORDS."!
 2.72 T "X REPRESENTS A VARIABLE.  E1, E2 AND E3 ARE ARITHMETIC"!
 2.74 T "EXPRESSIONS.  L1, L2 AND L3 ARE LINE NUMBERS.  G1 IS A"!
 2.76 T "LINE OR GROUP NUMBER.  L1-L3 AND G1 CAN BE REPLACED BY"!
 2.78 T "ARITHMETIC EXPRESSIONS WHICH DO NOT BEGIN WITH AN 	A	."!!!!!
 3.10 L R HELP 4.7