* design of the first programming language

	Separation of program into declaratives (nonexecutable)
		and imperative part (executable statements)
	<?> A good idea?  why?

	(For decls and imperatives ask what is in each category)

** Declarations (declaratives)
	descriptions of data or size of array (also says it's not a function)
		allocation and binding
			DIMENSION D(900)
			-subscripts run from 1 to 900
		initialization
			DATA D / 900*0.0
			-initialization increases security
		sharing of data between subprograms
			COMMON X,Y,Q
		aliasing of data (sharing space)
			EQUIVALENCE (R(2),Q(6))
		
** Imperatives (commands)
	commands to be executed at run-time. (don't go into details)
	    computation
		assignment (used with expressions)
			X1 = F(I+1,M1)*DAD - (C + 1.0)/Y
	    control-flow
		unconditional jump
			GO TO 7
		computed jump
			GO TO (30,31,32,33), I1
		assigned jump
			ASSIGN 20 TO LABEL
			GO TO LABEL, (20,30,40)
		conditionals
			IF (A+B) 7,6,9
			(neg, zero, positive)
			IF ACCUMULATOR OVERFLOW 10,20
			IF QUOTIENT OVERFLOW 10,20
		do loop
			DO 10 I=1,M,2
			...
		    10  CONTINUE
		procedure call
			CALL F(X,3)
		return from routine
			RETURN
		return from main
			STOP
	    I/O
		input
			READ 30,D(I)
		    30  FORMAT (F10.6)
		output
			PRINT 200,D(I+J),X

Which of the above helps make programs more structured?