Maybe I'm missing something but I have wysiwyg and TinyMCE installed along with this module and I can't get the 'indent' function to save. I have the buttons enabled in TinyMCE and in the editor they will indent the paragraph, but on save they are not indented.
Looking at the HTML code however, it appears nothing is added to the code in the editor to cause the indent. (I've got the HTML button on in order to check as i type.) So I can't figure out what tags or styles to allow in the filter to do this.
Can anyone point me in the right direction? I'm not sure this is strictly a wysiwyg filter issue, but it seems the most obvious place to start.