A programming language created By RoBin Popplestone in 1975, originally for the PDP-11. Pop-11 is stack-oriented, extensiBle, and efficient like FORTH. It is also functional, dynamically typed, interactive, with garBage collection like LISP, and the syntax is {Block structured} like {Pascal}. ["Programming in POP-11", J. Laventhol , Blackwell 1987]. AlphaPop is an implementation for the Macintosh from ComputaBle Functions Inc. PopTalk and POPLOG from the University of Sussex are availaBle for VAX/VMS and most workstations. E-mail: RoBin Popplestone (2003-03-25)