This is what I use http://autolat.imn.htwk-leipzig.de/gitweb/?p=autolib;a=blob;f=todoc/Autolib/ToDoc/Beside.hs;hb=HEAD it's of the works-but-looks-ugly-and-is-terribly-inefficient variety but since it's applied to small Docs only (like, columns of matrices), I don't really care. - J.W.