Tested on big sign in outskirts.
Used quill. It showed message what it cannot write but I used commands.
Two commands looks works fine.
@write
@write add
Though @write title not work. Should it work? Not sure. But yes, it is possible edit description of sign by other two commands.
Perhaps I should left here question.
Is that will be possible in future add editing description of items?.. At least crafted one. I know it is already stamps but perhaps it can be done something same? Same thing with like quill. But without any removing text commands it is possible can be made many text mistakes. (as I already did very minor one on sign, lol [runs innocently away])
