No, Mouse, the difference is that any BBCode in between those tags would be hidden. [nobbcode] still shows text.
Can't you combine the nobbcode tags with the [] brackets that hide normal text? I've never tried it but I always thought you could
No, because as soon as you use a right bracket ] after using an end-line left bracket [, everything following that will be read as code.
So if you use an end-line left brack [ and then use nobbcode, the nobbcode tag will be ignored and the right bracket ] at the end of the nobbcode tag will cause everything followed to be read as code.
If you switch the order and use the nobbcode tag and then an end-line left bracket [, then the bracket will not be read as code and will not prevent the subsequent text from being displayed.
