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Subject: Grouping functions and capabilities
The old "OpenFormula" had level 1, 2, etc., and we agreed that this was too constraining. Interestingly enough, the folks who were most concerned (wikiCalc) has since found that it wasn't hard to add all the "level 1" functions, and of course that aids portability. Thus, for a start, here's what I propose: * For every function, instead of saying "level X", simply give the function name as its (lowest-level) group. If some capabilities are at a higher level (not everyone needs to support them), then append _2, _3, etc. * Group the functions logically, and predefine a few levels in them the same way. * Define something like "levels" at the end. In the front, make it clear that an implementation need not implement a particular level/group, but that the levels/groups make it easier to explain what an implementation provides or what a spreadsheet needs. --- David A. Wheeler
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