@lackyluuk That's some very good work, thank you for the time you spent on it 
But i wouldn't call it "retroarch network commands" since it's definitely not "appealling". The aim is to make a gpio button "interact" with the emulators, so i think the title could be somethink like "map a GPIO button for various emulators interactions". Most of times, as you said in the wiki, it's for some original cases modding ... Remember we can also kill any running emulator, which is not part of your wiki (need a forum link ?)
Or something like "mod an original case : map buttons to GPIO and make them interact with recalbox" ? And add a link to the start stop button wiki ?
Maybe it should even be a new section ? Knowing that there has been some huge steps forward concernaning the RGB output ...
@supernature2k still working on a nice and "easy to setup" gpio handling for retroach network commands + killing emulators ?