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Manual Reference Pages  - xy_init_default (3)

NAME

xy_init_default(3f) - [M_xyplot] initialize XY plot routines (LICENSE:MIT)

CONTENTS

Synopsis
Description

SYNOPSIS

DESCRIPTION

This subroutine initializes or resets global values and the command dictionary. It is used at program startup and when the reset(1) command is used.

An xy_array of character strings containing the prototype for most commands is used as input to the parse routine. On the first call to xy_init_default this defines the command dictionary and sets the initial value for most of the dictionary. Each command name must be defined in order for the main program to distinguish between PLT commands and system commands. The main program tries to look up the command name in the dictionary to decide if it is a legitimate command.

In addition, the global logical LLQ() xy_array values are set to their defaults. This xy_array holds the switches used to control the many submodes of the program.

A large addition of global values (almost all of which end in the letter Q) are also set as necessary to ensure the program is reset to the proper initial modes.

A few environment UNIX variables are also read to establish the initial page length and banner strings and so on.

NOTE: Compaq/Digital Tru64 compiler warned about continued strings on lines not padded to column 72 with blanks so added line on end of continued lines; no longer required using free-format


xy_init_default (3) March 11, 2021
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