[openbox] openbox-gnome-session do not run from Debian stable ARM 64 bit

[Mgr. Janusz Chmiel]

Dear specialists?
I AM very sad, that I do not know, why script such as 
openbox-gnome-session is no The part of Openbox debian package for ARM64 
bit edition.
Where are those scripts please?

I have read about this scripts on this page.
http://openbox.org/wiki/Help:Getting_started
Or do I have to download Openbox source code and find those scripts here?
My dream is to run Openbox with Gnome-shell or may be with 
gnome-session. Unfortunately, Gnome included with debian stable uses 
window manager which uses many graphics. And window manager is totally 
incompatible with Android environment.
Openbox is very light weight window manager, allocates only few MB of 
RAM and support hod keys, which makes it perfect for visually impaired 
users. Thank you very much for yours answer.
With kindness regards.
Janusz Chmiel