[SM-USERS] Protecting display settings in Squirrelmail

[Xn N. <xn...@gm...>]

I am trying to figure out how to prevent Squirrelmail users from
changing their Display Preferences.  If that is not possible, I would
like to change them back to default settings.

I have experimented with the forced_prefs plugin, but have not been
able to understand how it is supposed to works.

I have tried disabling write access to the
/var/lib/squirrelmail/dat/myuser.pref file, but that seems to break
other things in Squirrelmail.

I am now considering letting the users change what they want, but then
copying a default prefs file back over their user prefs file.

I am setting up shared mail accounts that will each be used by several
people, and I do not one of them to change the display settings, since
that would confuse the next user.

I thought the forced_prefs plugin was what I needed, but I am having a
hard time grasping how it works (I'm new to SM).

Is there a prefered way to do this?

thanks!