sanitize
Filters input of particular HTML tags and other markup that may be unsafe content. If the sanitize parameter is "1", it will use the MT configured "GlobalSanitizeSpec" setting to control how it processes the input. But the parameter may also specify this directly. For example:
<$mt:CommentBody sanitize="b,strong,em,i,ul,li,ol,p,br/"$>
This would strip any HTML tags from the comment that are not specified in this list.