More out of interest really.
How does the reply box work out whether or not your incorrectly formatting a code post and what are the most common errors people encounter?
As I've written a rediculously long reply to something and it's being flagged as incorrectly code formed yet I see no errors in my structure of the code when being written into the forum.
Ie. All code is indented so that it shows as code, and the quoting used is also fine.