Zoem is an interpretive macro/programming language that is evaluated by the macro processor called zoem. It is used by Portable Unix Documentation (PUD) and Aephea. The latter is a general authoring tool for writing HTML documents and provides both useful abstractions and a framework for creating new abstractions. It uses and promotes the use of CSS. A small core of Aephea has been ported to the typesetting language troff. This core is used in PUD, which provides mini-languages for FAQ documents and UNIX manual pages. Documents written in PUD can be output to troff and html, and further to plain text, PostScript, and PDF.