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THE META-HTML LANGUAGE REFERENCE MANUAL
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Name: DEFVAR
Section:
Variables
Synopsis:
Description:
DEFault the value of the VARiable named by NAME to VALUE.
defvar
assigns VALUE to NAME if, and only if, NAME has a non-empty value.
defvar
could have been defined in Meta-HTML using define-tag
:
<define-tag defvar>
<if <not <get-var %0>> <set-var %0=%1>>
</define-tag>
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The
META-HTML
Reference Manual V1.4
Copyright © 1995, 1996,
Brian J. Fox,
1996, 1997 Universal Access Inc.
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bug-manual@metahtml.com