I know most of you see the thread title and automaticaly regect it but i was thinking that eventually there could be a double sided wall, a wall that lets something in one side but on the other side it wont let any thing out, what do you guys think?
In my opinion, you should use PIPE for this. @randelserrano: There is a rotating tool for Windows (however I don't know about the other versions), when pasting or stamping things press 'ctrl+r', to flip press 'ctrl+shift+r'.
This is a really quick example, the only real problem with using these is that PIPE is pressure sensitive. Also, as a side note: contractions conventionally require apostrophes.
@surfcash(View Post) Try making such a thing: (PRTI) (PRTI) (PRTO)(PRTO) (PRTI)(PRTI) (PRTO) (PRTO) (PRTI) (PRTI) (PRTO)(PRTO) (PRTI) (PRTI) (PRTO)(PRTO) It has a 4x4 size, that makes it wall-like. It has only one possible direction and is unbreakable.