Unfortunately however, the xfce4-terminal application also has its help assigned to "F1".
This makes sense, but it's more likely that one wants to call the F1-function of the application running in the terminal instead.
Thanks to This post by user "Vadim" on superuser.com, here's how you do it:
- Run xfce4-appearance-settings.
- Click Settings tab.
- Check Enable editable accelerators.
- Click Close.
- Open an xfce terminal.
- Click the Help menu.
- Hover over Contents (do not click).
- Press the Del key to delete the accelerator.
See the XFCE4 documentation article about this feature for more information.