The Markup Maker tool takes a simple list of id attributes that you enter and converts it to a valid XHTML or HTML document (scaffolding, if you like). Use a single space - not tab - indent to signify sections that are subsections of the parent. There's no need to enter # values for id attributes, they're added for you.
If you choose HTML5 as the doctype, the tool automatically converts any ids that it finds which match HTML5 elements (for example header, footer, nav) and outputs <header></header>, <footer></footer>, <nav></nav>, rather than the HTML/XHTML1 format which would be <div id="header"></div>, <div id="footer"></div> and <div id="nav"></div>.
