So the way to think of tu'a is that it allows you to use an object where you need an abstraction. For example the english 'try the door' could be translated to lojban as 'ko troci tu'a lo vrogai'. You have to do this because you can't try an object, you have to try an action.
@@Liggliluff Well, it isn't ASCII friendly for most people Although I like the idea of changing ' to h, but if Lojbanists really wanted to keep ', I still _really_ want uppercase ' to be H instead of h, it just looks so ugly otherwise...