I need extract some information from some files. They look like a form
of postscript and have the suffix .PGPOST. The documents may come from
a mainframe environment.

I need to know the meanings of each of the tags or even better, some
source code that explains how the documents are constructed.

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Clarification of Question by ftangrude-ga on 07 Jul 2004 19:07 PDT

I now know that this process is run on a VAX.