Save and load lines

[Kamakaze]

I am trying to add a savelines and loadlines to a GUI code I have

Pretty much you fire the GUI and if you have rights to edit then you can press the edit button, but I am not quite sure on how to make the save and load lines part of it to add to the code so that when you write something in the "edit" gui and press "Save" then it actually saves it.

Thanks