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": http://cgit.freedesktop.org/libreoffice/core/commit/?id=18749c7ad38d1a8cec1a941100112c99260c34fa 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: http://wiki.documentfoundation.org/Testing_Daily_Builds 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.