If I build a website using hand-coded, compliant HTML/CSS/JS, and it gets passed off to a client who is going to modify it using a WYSIWYG HTML editor, is there a recommendation of software which will do the least amount of damage? I'm not talking about a TEXTAREA editor, but an actual program like Dreamweaver, etc. I'm looking for something that won't add its own stylesheets, move my <head> elements around, add its own proprietary tags, etc. Keep my stuff as intact as possible. Does such a thing exist?