Unless I am misunderstanding what I am seeing in the beta, "markdown support" appears to simply be that markdown triggers macros that then format the characters in rich text, and the actual markdown disappears. I hope this is not the case, and I am just doing this wrong. If this is the case, it is very disappointing, and calling it markdown support is rather misleading. My markdown should not be blown away after I type it; it ought to be preserved and rendered as HTML when previewed/viewed/exported.