Have a look at ConTeX (www.contextgarden.net). It is a TeX macro package, just like LaTeX. But it is a MUCH more consistent syntax, heavily relies on LuaTeX, an

Have a look at ConTeX (www.contextgarden.net). It is a TeX macro package, just like LaTeX. But it is a MUCH more consistent syntax, heavily relies on LuaTeX, and can generate XML output (for webpage and epub) as well.