ALEPH is a 5 letter word that starts with A.

1. 1. a language encouraging program hierarchy.

   2. A system for formal semantics written by Peter Henderson ca. 1970.

   [CACM 15(11):967-973 (Nov 1972)].

2. ["Aleph: A language for typesetting", Luigi Semenzato <luigi@cs.berkeley.edu> and Edward Wang <edward@cs.berkeley.edu> in Proceedings of Electronic Publishing, 1992 Ed. Vanoirbeek & Coray Cambridge University Press 1992].