(I'm french, so excuse me for my English)
there is a metalic tool, a sort of key ('clé à laine' in french) below my x3 live. It reminds me a tool to correct the fretboard of a guitar.
Can someone tell me why Line6 chose to place it there? And what is it for?
(You can have a look to the attached photo)
Thank you very much for your help!