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[02.03.01]
02.03 General Programming Considerations
A. Use of Coding Forms
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Card serial numbers in columns 1-6 of source decks are not sequence checked by the compiler.
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Continuation of Specifications on Multiple Lines
- a) General Rule — Data and Environment entries using more than a single card for complete specification have a non-blank character in column 72 to indicate that the following card is part of the same entry. Continuation of Procedure text on successive lines is determined by the nature of the text; no continuation character is used.
- b) Data and Environment Names — All imbedded and leading blanks in the name fields of cards associated with an entry are eliminated and the non-blank characters are compressed to form a single name.
- c) Determination of Break Points — In all sections each word or literal must be complete upon a line since the processor assumes a blank following column 72 of Procedure lines and replaces the contents of column 72 with a blank in Data and Environment lines. The only exception to this rule is introduced by the manner in which the 7090 processor handles literals in the Data Description. Literals in this section which are continued on multiple lines in violation of the rules given on page 83 of the General Information Manual are handled correctly. Use of this characteristic of the 7090 processor should not be made if compatibility with other processors is desired.
- d) Continuation of Data Description Entries — The name and description fields only of Data Description entries may be continued. All other specifications to be made for an entry must be made on the first card of that entry since these fields are not scanned on continuation cards.
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Termination of Statements and Entries
- a) Procedure statements are terminated by the first period (.) followed by a blank. Any information following this period blank is considered to be commentary.