echo 0 > /proc/stb/video/alpha --> hide
echo 255 > /proc/stb/video/alpha --> unhide
the code is thoroughly taken from letterbox plugin, I assigned the hotkey, seems to work but not in all screens, you can test it in second infobar, in channel selection I get unhandled key, means I have to assign the hotkey inside the plugin itself, I don´t know how to do it, any help would be appreciated, Alpha plugin for testing, just copy to Extensions and restart enigma2