Definitions for "Eqn"
Keywords:  lorinda, neqn, troff, kernighan, nroff
Equation typesetting software for UNIX. The Bell Labs analogue to .
Part of the troff suite of Unix document layout tools, eqn is a preprocessor that formats equations for printing. A similar program, neqn, accepted the same input as eqn, but produced output tuned to look better in nroff. The eqn program was created in 1974 by Brian Kernighan and Lorinda Cherry.