|
|||||
|
|
|||||
| Public identifiers in the SGML declaration | |||||
| Prerequisite Concepts | Related Syntax | ||||
The public identifiers that can appear in the SGML declaration, for the base character sets, for the capacity set, and for the concrete syntax, are processed in much the same way as with the #dtd entity. They are identified with the keywords #charset, #capacity, and #syntax, respectively. They are like the #dtd entity in most respects:
external-text-entity #implied but have to be mentioned explicitly.
entity test together with their identifying keywords.
"%q" format item gives the strings #charset, #capacity, and #syntax for these entities.
Entities referenced by public identifiers in the SGML declaration have the following properties:
external-text-entity rules in an OmniMark program that use any of the keywords #charset, #capacity, or #syntax in their headings, then all entities of the types represented by those keywords must be handled by the OmniMark program. If one or more of these keywords is not used in the header of any external-text-entity rule, then all entities of the types represented by those keywords are subject to OmniMark's default processing.
The ISO character entities are defined in external files rather than being "hard coded" inside OmniMark's built-in entity manager, with the files divided as described in Appendix D.4 of ISO 8879, the SGML standard. These files are shipped with OmniMark, together with a file containing a library rule that maps both ISO 8879-2986 and ISO 8879:1986 versions of the public identifiers to the appropriate files.
|
Prerequisite Concepts Base character sets Concrete syntaxes Entities Entity manager: built-in External entity rules XML/SGML entity managers |
Related Syntax #capacity #charset #dtd #implied #syntax %q external-text-entity library |
| ---- |
