GMod Default Stools

Why are the default stools hidden or whatever? Am i unable to edit the luas of them and then reupload that on my servers fastdl to extend the “fun” from the default stools? Can someone tell me how to find the default stools lua files or possibly why they are hidden?

You can find them Here or in your “garrysmod content.gcf”.

Thanks, i actually ftped them off my friends server, he had the sandbox gamemode with the stools so i took those, but your link shall come in handy!