At working on old "Issues", I have acknoledge that the Documentation seems like from 2012.
Too close the Ticket, It would make sense to do it, when the Source-Doc is again Up-to-Date.
This can be usefull for the other Ticket as an reference-Spot.
Also an Blog-Post is avalible: https://discuss.kde.org/t/callibra-wip-old-documentation-integration-and-differentiation-functions/30207
Important Quote on this Ticket:
"Write-up:
- With check-up, if this Feature is implemented. It came out, that the Documentation seems Outdated (latest Update 2012)
Source: [Eng] https://invent.kde.org/office/calligra/-/tree/master/doc/sheets?ref_type=heads | [Ger Tanslation] https://docs.kde.org/stable5/de/calligra/calligra/
- "integration and differentiation functions" seems supported (i.e. Picture) but more than that I couln'd find out.
TO-DO:
- With the "Documentation"-Team, look why it's from 2012 and update it
- Check, if the English/Source have some info's
- On this Step I can translate it also in German
- When nothing found, maby the next Step is the Dev-Team"