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| built-in variable | sgml-dtds | ||||||||
Purpose
A shelf used to store compiled SGML DTDs as items. These items are created and used as follows:
document or subdocument with creating) sets an item of the shelf to be the compiled DTD. It creates the item if it did not previously exist.
instance or element-content) uses an item of the sgml-dtds shelf. An item of this shelf can be used any number of times. Items can even be used simultaneously for nested do sgml-parse actions.
You can perform the following on the sgml-dtds shelf:
{...}, but not by their item number (you cannot use [...]). An sgml-dtds item can only be used in a do sgml-parse action.
remove.
clear sgml-dtds permanently removes all compiled DTDs from the shelf.
The action new can't be applied to the sgml-dtds shelf. The creating option of do sgml-parse adds items to the sgml-dtds shelf.
None of the other shelf modification actions are allowed with the sgml-dtds shelf. You cannot use the following keywords with these shelves:
sgml-dtds can be thought of as a shelf, except that item values can't be created or used except by do sgml-parse (for example, you can't output a compiled DTD).
dtds is a deprecated synonym for sgml-dtds.
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Related Syntax clear creating new remove do sgml-parse |
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