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On 24/07/2021 09:26, Marcus Reichardt wrote: ... (Now SGML also has LPDs, a type of declaration set available in addition to DTDs, to basically do the same thing, and that can be I don't have such a rosy recollection of the Link Process Definition (LPD) facility. Back in the day, we used it exactly once, and the LPDs were dropped as soon as we could replace them with proper software. LPDs could add attributes to elements based on the element's context, yes. This works well enough in the two-level toy example in the SGML Handbook, but if you need more context, you end up with an explosion of LPDs for the different contexts. The utility of putting style information as part of the validation never made sense to me either. I wouldn't count LPDs as one of the useful features of SGML. Regards, Tony Graham. -- Senior Architect XML Division Antenna House, Inc. ---- Skerries, Ireland tgraham@antenna.co.jp
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