Petr Kraus 582a651887 Fix and clarify altlen
1) Fix `pSampleMask `s `altlen` to have C99 semantics equivalent to len
2) Fix `registry.rnc` to also have altlen for `param`s
3) Document `altlen` in `registry.rnc` comments
4) Clarify `altlen` in schema doc that beside C syntax it also follows C
semantics
5) Clarify `altlen` in schema doc in case there ever is `latexmath` in
comma separated `len`
2017-10-13 00:36:41 +02:00
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2017-10-13 00:36:41 +02:00