Pico - A language for picture composition.

Pico is a simple expression language used in an interactive graphics editor to define transformations and compositions of digitized images. Picture transformations are defined as arithmetic operations on two dimensional pixel structures. Within the graphics editor the Pico expressions are checked for syntax, translated and then optimized by a built-in on- the-fly compiler. The editor that implements the language resembles a conventional multi-file editor with options for opening, reading, editing, displaying and rewriting digitized images.