rule
document-start condition? local-declaration* action+
A rule that allows you to do processing and produce output before the beginning of an XML or SGML document. These rules are to be performed after any process-start rules. document-start rules are performed in the order they appear in the program.
document-start rules are allowed only in aided translation type programs that use up-translate, down-translate, or context-translate. They are equivalent to the processing done before the parse continuation operator (%c or suppress) in a do xml-parse or do sgml-parse.
The following are examples of document-start rules:
document-start
output "{\rtf1\mac %n"
document-start when index isnt open
open index as file "index.doc"