Gdm session files

[Hanspeter Roth]

  On Aug 28 at 14:49, Joe Marcus Clarke spoke:

> On Sun, 2005-08-28 at 20:32 +0200, Hanspeter Roth wrote:
> >   On Aug 28 at 12:15, Dominique Goncalves spoke:
> > 
> > > http://www.freebsd.org/gnome/docs/faq2.html#q16
> > 
> > Ok. I have created an icewm.desktop with Name=Icewm. This appears as
> > '3. Icewm'.
> > And I've create an xinitrc.desktop with Name=Xinitrc. But this
> > appears as '4. foo'.
> > Why is 'foo' used instead of 'Xinitrc'?
> 
> Your TryExec line is probably wrong.  Note: you should not create
> a .xinitrc entry for any display manager.

Why not?
My whole xinitrc.desktop looks like:

[Desktop Entry]
Encoding=UTF-8
Name=Xinitrc
Comment=Xinitrc
Exec=$HOME/.xinitrc
TryExec=$HOME/.xinitrc
Icon=
Type=Application

So what is the meaning of TryExec?
Are these fields documented somewhere?

-Hanspeter