The feature Edit - Fill- Random has no pelp buton nor help page.
A user guide and a reference should be written
Olivier Hallot committed a patch related to this issue.
It has been pushed to "master":
fdo#80453 (part) Help button for insert random #
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.
This bug fix comes with LibreOffice 4.4 (release notes https://wiki.documentfoundation.org/ReleaseNotes/4.4)
Local help page button for Calc in Edit ▸ Fill ▸ Random Number.