Volume 2 Chapter 9 Screen Sub-menu CONTENTS

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*BTEST

Function

*BTEST is used to test for one or more bit screens.

Syntax

Remarks

The major difference between the use of *BTES and SCRE is that SCRE only allows the .AND. operation whereas *BTES allows.AND., .OR. and .NOT. operations.

It should be noted that any bit screens specified in *BTES tests are unaffected by the NOSCREENS command.

Graphics QUEST3D Procedure

Ex. Suppose you wish to find all hexagonal and rhombohedral entries (bit screens 107 and 109 resp.)

Basic QUEST Procedure

Ex. T1  *BTES  21  -22
QUES   T1

This will register hits for transition elements (21) but exclude 1st-row transition elements (22).

Related Keywords

NOSCREENS, SCREEN

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Volume 2 Chapter 9 Screen Sub-menu NOSCREENS.