To reply to my own post, I had a look at that documentation web site, which includes the following small print:

Perl

3B2's Perl support was developed with the aid of Perl Kit, Version 5.0. Copyright © 1989-2000, Larry Wall. All rights reserved.

There appears to be some sort of connection to Perl and SGML. I'm out of my depth here....

In reply to Re: parsing the 3B2 proprietary markup language by Anonymous Monk
in thread parsing the 3B2 proprietary markup language by Anonymous Monk

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