From FreeCAD Documentation
- Innerhalb des Programms FreeCAD in dem Hilfemenü auf den Eintrag "Hilfe" klicken. Es sollte sich das Programm Qt-Assistent öffnen.
- Im Qt-Assistenten in dem Menü "Bearbeiten" auf den Eintrag "Einstellungen..." klicken.
- In the preferences dialog click on the tab Documentation.
- In the documentation dialog select org.freecad.usermanual and click on "Remove"
- Close the dialog with ok, but do not close the Qt-assistant. This is important as otherwise another helpfile will not be registered.
- Open again the preferences dialog via the menu Edit/Preferences.
- Select the tab documentation and click the button Add...
- In the filedialog navigate to your new helpfile and select freecad.qch
- close the filedialog by confirming your selection. The Documentation tab in the preferences should now have again a line with org.freecad.usermanual.
- Close the Preferences with Ok.
- You should now have the new documentation available in the Qt-assistant, that are accessible from within FreeCAD.