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SCREEN

SCREEN is used to assign bit screens, either for a search based on screens alone or to be `combined' with defined tests to constitute the search question.

Syntax

SCREEN n1 n2 n3 ....

The bit screens n1, n2, n3 etc. are automatically linked by the .AND. logical operator, ie. all must be satisfied for a hit to be registered.

Remarks

Normally you will only assign bit screen numbers in the range 1-155 (see Appendix 1). Assignment of connectivity bit screens can be dangerous and should be done only by experienced users. 585, 586, 620 can only be set by SCREEN.

Graphics QUEST3D Procedure

Ex.

• Select SCREENS from the SEARCH menu.

• The SEARCH menu is replaced by the SCREEN sub-menu.

  Use HELP to decide what SCREENS (either POSITIVE or NEGATIVE) you require,
  then select either SCREEN or *BTEST to define them.

• Select SCREEN

•  Please type the numbers of SCREENS : (positive or negative)
  (Press RETURN if you don't want to specify any SCREENS.)

• Type 48 49 -34 -48 <R>

  Select TO-SEARCH

• The SCREEN sub-menu is replaced by the SEARCH menu.

• Select START

• The search process is initiated.

• neutron studies (bit screen 49) .AND.
• error-free entries (bit screen -34)

At any time before you initiate the search process you can select SCREEN from the SCREEN sub-menu and cancel an earlier specification:

• cancel n by specifying -n
• cancel -n by specifying n

When the SCREEN sub-menu is displayed you should ignore the prompt suggesting the use of HELP to decide what screens you require. Instead consult Appendix 1 and then select either SCREEN or *BTEST.

Basic QUEST Procedure

Ex.

SCRE  48  49  -34  -48
STAR

Hits will be registered for:

• neutron studies (bit screen 49) .AND.
• error-free entries (bit screen -34)

*BTEST, NOSCREENS

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Volume 2 Chapter 10 Search Menu CONTENTS.