File: groff.info,  Node: Credits,  Prev: Conventions Used in This Manual,  Up: Introduction

1.9 Credits
===========

We adapted portions of this manual from existing documents.  James
Clark's man pages were an essential resource; we have updated them in
parallel with the development of this manual.  We based the tutorial for
macro users on Eric Allman's introduction to his 'me' macro package
(which we also provide, little altered from 4.4BSD). Larry Kollar
contributed much of the material on the 'ms' macro package.