[Brad]

They are the templates that display the html for forums on index.php.

'level 1' templates are used if a forum has no parent forum (ie is not a sub-forum)

'level 2' templates are used if a forum is a sub-forum and its parent forum is not a sub forum.

'no post' is used in forums with 'act as forum?' option checked to no in the admin cp, 'post' forums are used when this option is checked to yes.

Moreover there is a option in the admin cp that determains how many levels deep forums can go on index.php, by default it is set to 2 for preformance reasons (same reason you see no 'level 3' templates). If you set this option to 3 and add forumhome_forumbit_level3_nopost and forumhome_forumbit_level3_post templates to your style level 3 deep forums will display on idex.php.


Hope that explains it for you