/A/. Software Portability Group, U Waterloo. A typeless language derived from (and similar to) B. Provides guaranteed order of evaluation for side effects in expressions. Also character indexing operators. See also ref="module.php?name=Lexikon&file=search&eid=1&query=Zed">Zed. ["Eh reference Manual", R.S.C. Braga, RR CS-76-45, U Waterloo, Nov 1976].