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	73-10-29
USING FORTRAN PROGRAMS
MOST OF THE APPLICATIONS PROGRAMS ARE WRITTEN IN FORTRAN IV.
THE FOLLOWING IS AN ITRODUCTION TO RUNNING THESE PROGRAMS
FORTRAN PROGRAMS CAN APPEAR IN MANY DIFFERENT FORMS:

1)THE AUTHOR WRITES A SOURCE PROGRAM<KALL-KOD>.THIS IS THE ONLY
	MATERIAL THAT IS READABLE TO A HUMAN BEING BUT IT IS NEVER USED
	WHEN RUNNING THE PROGRAMS
2)A PROGRAM CALLED A COMPILER TRANSLATES THE SOURCE CODE TO A BINARY
	YOU WILL NEVER MEET THE COMPILER BUT YOU MIGHT MEET THE BINARY
3)A PROGRAM CALLED LOAD PICKS UPP THE BINARIES AND BUILDS THE FINAL
	PROGRAM WHICH THEN IS CALLED A LOADER IMAGE FILE
4)WHEN THE LODER IMAGE FILE IS OPERATING IN THE MACHINE A PROGRAM CALLED
	FRTS <FORTRAN RUN TIME SYSTEM>SUPERVICES THE OPERATION

YOU ALSO NEED TO KNOW A BIT ABOUT THE SYNTAX USED WITH TWO RUTINES IN THE
SYSTEM:
A) THE MONITOR<OPERATIV SYSTEM>
	THE MONITOR SUPERVICES WHAT GOES ON IN THE MACHINE.YOU ASK IT
TO BRING YOUR PROGRAM INTO CORE BY ,AFTER THE MONITOR . TYPING 
	R NAME
	OR
	RUN DEVICE NAME
THAT IS ALL YOU NEED TO KNOW ABOUT THE MONITOR
B) THE COMMAND DECODER
	THE COMMAND DECODER ACCEPTS NAMES OF PROGRAMS AND FILES TOGETHER
WITH SOME EXTRA INFORMATION TO BE PASSED  TO THE PROGRAMS E.G.
TELLING A FORTRAN PROGRAM THAT FILE UNIT NUMBER 6  IN THE PROGRAM IS
THE FILE ABC.DA ON DTA1 WE TYPE
	DTA1:ABC.DA/6
FOR THE SYNTAX OF THE COMMAND DECODER SEE APPENDIX A

ERROR CORRECTIONS:
IN ALL THE SYSTEM PROGRAMS YOU WILL MEET THE FOLLOWING THREE CHARACTERS
TYPED FROM THE KEYBOARD HAVE THE SAME MEANING:
1)RUBOUT TAKES AWAY THE LAST CHARACTER TYPED
CAN BE REPEATED FOR MULTIPLE CHARACTERS
2)CONTROL U TAKES AWAY THE PRESENT LINE
3)CONTROL C ABORTS THE PRESENT PROGRAM AND CALLS THE MONITOR
ALL LINES MUST BE TERMINATED BY CARRIGE RETURN<CR> THE ONE EXEPTION IS
THE ALTMODE TERMINATION TO THE COMAND DECODER

STARTING A FORTRAN PROGRAM:
1)IF THE PROGRAM IS IN THE FORM OF BINARIES:
	.R LOAD
	*TEMP<DEL1,DEL2,DEL3,DTA1:TWOCOM
	*TEST.DA/6
	*$

	A)CALL LOAD
	B)SPECIFY THE BINARIES TO BE USED<THE EXAMPLE IS THE LESQ PROGRAM
		SPECIFY ALSO AN OUTPUT FILE TO BE USED FOR A RESTART
		SAVES A LOT OF TIME
	C)AFTER THE BINARIES HAVE BEEN SPECIFIED SPECIFY ANY PROGRAM FILE
		REQUIRED
		NOTE THAN AN INPUT FILE SPECIFIED AS ABOVE BUT AN OUTPUT 
		FILE AS
	*ABC.XX</7
		DATA FILES IN THE FORTRAN SYSTEM SHOULD HAVE EXTENSION .DA
	D)TERMINATE INPUT WITH ALTMODE  EXECUTION STARTS

2)IF THE PROGRAM IS AS A LOADER IMAGE
	. R FRTS
	*TEMP			THE IMAGE ABOVE
	*TEST.DA/6
	*ABC.DA</7
	*$				START

INPUT
INPUT TO A FORTRAN PROGRAM:
1)IN ALL INPUT YOU CAN USE RUBOUT AND CONTROL-U
2)NUMERIC  INPUT FOLLOWS THE FOLLOWING RULES:
	A)INPUT IS NOT FORMATED  NUMERIC FIELDS CAN BE SEPERATED BY ,
	BUT A NUMERIC FIELD MUST NOT EXCEED THAT IN THE FORMAT STATEMENT
	SEE PROGRAM DESCRIPTION
	SPACES ARE ALWAYS INTERPRETED AS 0
	IE IN A FIELD WITH TWO GROUPS OFF 3 CHAR. EACH THE FOLLOWING
	WOULD APPLY
	INPUT		SEEN AS
	AAABBB
	1		1	0
	 1  1		10	1
	1,1		1	1
	10,10		10	10
	1000,100	100	0	NOTE

	B)
	INPUT CAN BE IN THE FORMS:
	WITHOUT DECIMAL POINT
	WITH DECIMAL POINT
	IN E FORMAT	EG 1E10 IS 100   -1E-2 IS-0.001
	C)ERRORS
	NOTE IMPORTANT
	IF AN UN-PERMITTED CHARACTER IS DETECTED IN NUMERIC INPUT
	I.E. ANYTHING BUT THE FOLLOWING:
	 0-9
	 , . - +
	 E IN PROPER POSITION
	THE PROGRAM ABORTS AND ALL DATA ALREADY INPUT IS LOST
	FOR THIS REASON OUTLAY PROVIDES FOR READING THE DATA
	FROM AN EDITOR CREATED FILE