Syntax conventions

GDDM-PGF V2R1.3 Programming Guide and Reference

Syntax conventions

GDDM-PGF V2R1.3 Programming Guide and Reference
SC33-0333-01

The syntax of the calls shown is for the nonreentrant PL/I or FORTRAN interface, omitting the CALL verb.

Lowercase words in the argument positions in the descriptions of the call statements in this topic should be replaced by identifiers or expressions that are valid as subroutine arguments in the language being used. All numeric parameters must be fullword items. All counts and length parameters must be binary integers, whereas most other numeric values are single-precision floating-point. Text should be stored as strings of EBCDIC characters.

To assist APL users, the syntax box for each PGF call contains the APL code for that call. A complete list of APL codes in numerical order is provided on page 4.132. In addition, for users of the system programming interface, each call also contains the PGF request control parameter (RCP) code in hexadecimal and decimal format.

In the parameter descriptions that follow the syntax of a call, the parameters for which you must provide a value are indicated by (specified by user), followed by the type of value. Parameters that receive information from GDDM-PGF are indicated by (returned by GDDM), followed by the type of value.

The single-parameter calls CHSET, CHXSET, CHYSET, and CHZSET can be used to set various PG routine options. For each use, the parameter must consist of either:

A variable name, that refers to a specific string of at least four alphabetic characters.
A literal string of at least four alphabetic characters. This form is not applicable in COBOL.

Additional characters may be added to enhance application program readability, but only the first four defining the option are recognized by the PG routines.

In all cases, the default option is in uppercase bold.

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