What is the prefered way to invoke gnome?

[Eric Guenterberg <mavpion fire csua ucla edu>]

Currently my .xsession file contains:
> xterm  &
> 
> enlightenment &
> 
> exec gnome-session

Is this the prefered way of invoking gnome, or is there a better, more
generally encouraged method?

Thanks,

--Eric Guenterberg