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Related Syntax | Related Concepts | |
operator |
is in-library |
Return type: Switch
Returns: True if the public identifier for the entity being tested is on the #library shelf, and false otherwise. Replacing is
with isnt
will reverse the results.
Syntax
(entity | notation) (is | isnt) in-library
Either an entity or a notation test used to determine whether the program contains, respectively, library
rules for the specified entity, or a system identifier of the specified notation.
in-library
succeeds only if the entity is an external entity, with a public identifier that is mapped to a system identifier in an OmniMark library
declaration.
Related Syntax |
Related Concepts |
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