My first question is, what XHTML tags can and can not be placed in a post? The documentation says that there is a default set, but I have yet to find any tags that don't work (which is a good thing in my case).
My second question is, does WP have a certain amount of characters that it inserts a break tag in a post? The reason I ask is that I'm inserting a flash movie in a post. I figured to be on the safe side, I would string all the tags (the object, params, embed, etc.) together with now white space. Now... the flash movie displays as I expected, but when I look at the code, there is a break tag, that I didn't enter between two of the param tags.
I plan on putting several different types of media in my posts including mpgs, and flash, and I'm hoping it will all be possible just by putting the usual XHTML i would use if I were design the page outside of a blog system into the post field. Am I going to have issues with that?