tags, like the image Wheelsup posted, instead of actually showing the image, it would show the code surrounding the image.
IE:
[ img]http://i479.photobucket.com/albums/rr153/wheelsup_cavu/Museums/March/May%2002%202009/th_100_0635.jpg[/ img]
I had to put spaces in the [IMG] tags so it wouldn't show the image which aren't suppose to be there, but that's what I mean.
But it does this here:
[code][ATTACH=full]402037[/ATTACH]