Calc's Formula option page has a new entry related to alien file recalculation.
The associated help page should be updated accordingly.
Reproducible with LO 220.127.116.11 (Win 8.1)
Steps to Reproduce:
1. Open CALC
2. Go to TOOLS -> OPTIONS -> section LIBREOFFICE CALC -> subsection FORMULA
3. Click the help button
No help regarding the Recalculation feature.