When processing a reference to an external entity whose declaration contains a public identifier but no system identifier, OmniMark must be told how to locate the entity's replacement value. A library declaration performs this function.

library declarations can also be used by OmniMark in a library file specified on the command line by using the -library command-line option. A library file can be used either while an OmniMark program is being run or while a DTD is being compiled. It gives public/system identifier bindings that are only used during that run.

For example, if a DTD is being compiled with the OmniMark program on one computer, and if the result will be used on another computer (that may have a different directory structure), it is usually appropriate to put the machine-specific library file declaration in library files during each of the runs.

This example of a library declaration could be used to locate the entity sets for alphabetic characters defined in Annex D of ISO 8879.

  library 
     "ISO 8879-1986//ENTITIES Added Latin 1//EN"        "iso-lat1.gml"
     "ISO 8879-1986//ENTITIES Added Latin 2//EN"        "iso-lat2.gml"
     "ISO 8879-1986//ENTITIES Greek Letters//EN"        "iso-grk1.gml"
     "ISO 8879-1986//ENTITIES Monotoniko Greek//EN"     "iso-grk2.gml"
     "ISO 8879-1986//ENTITIES Russian Cyrillic//EN"     "iso-cyr1.gml"
     "ISO 8879-1986//ENTITIES Non-Russian Cyrillic//EN" "iso-cyr2.gml"
        

Prerequisite Concepts Library rules and the library path

Related Syntax external-text-entity library #libpath #library #libvalue

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