Comment ;
; this is a comment block
; comments always start with a semicolon
; the next line, while not a comment, is a legal blank line
;whitespace alone is a valid line in a routine
;** Comments can have any graphic character, but no "control"
;** characters
;graphic characters such as: !@#$%^&*()_+=-{}[]|\:"?/>.<,
;the space character is considered a graphic character, even
;though you can't see it.
; ASCII characters whose numeric code is above 128 and below 32
; are NOT allowed on a line in a routine.
;; multiple semicolons are okay
; a line that has a tag must have whitespace after the tag, bug
; does not have to have a comment or a command on it
Tag1
;
;Tags can start with % or an uppercase or lowercase alphabetic
; or can be a series of numeric characters
%HELO ;
;
0123 ;
;
%987 ;
; the most common label is uppercase alphabetic
LABEL ;
;
; Tags can be followed directly by an open parenthesis and a
; formal list of variables, and a close parenthesis
ANOTHER(X) ;
;
;Normally, a subroutine would be ended by a QUIT command, but we
; are taking advantage of the rule that the END of routine is an
; implicit QUIT