Because Adobe respects your HTML code and won't change it, your website's XHTML standards compliance will depend on the HTML code that you create. However, if you do insert any system modules onto your web pages, the code generated by the system will be compliant.
I had questions about integrating Muse with Business Catalyst. I had spent hours researching, learning, and dealing with certain issues with my forms. I got a 30 second answer that would have saved me those hours spent and will save me hours in the future. Great support and very knowledgeable!Brad B.