I’m sorry, I missed that point. Max2Play supports a browser-based text editor. The best thing to do is to take a look at our hardware control plugin using the pluginbuilder. A text editor is already used in this plugin. On the Settings/Reboot page you can activate the debug mode (next to the beta update). Then you can edit existing plugins in the pluginbuilder. Apart from that you can of course also edit the files via SSH and nano.