General Design Guidelines for GNUstep and apps

[Thomas]

Hello,

as I play around with GSDE I noticed that there are some differences between 
the usage of the apps.

Does a Design Guideline for GNUstep exists (as Apple has(d))?

So at macos every app from the Finder to the smallest app has the (standard) 
menue points:  hide, hide others, show all.
Here with GNUstep only GWorkspace has this menue entries and by the way on my 
HP prodesk 400 G3 mini with GSDE on Debian hide others doesn´t work, it hides 
GWorkspace itself, the opposite behavior I awaited.

Other (maybe stupid) Question from a newbe: I copied for instance from github 
the zip files from Textedit to my computer to find out wether I can open and 
learn to program the source with Projectcenter and Gorm but I can´t find a 
projectfile like in Xcode.
Do I have to use git how to begin programming existing projects?  Hints 
welcome. :-)


Best regards and Happy Easter!

Thomas