INTRODUCTION

Macintosh Hypercard is an impressive way of organizing information. Mathematica Journal is an impressive way of preparing and presenting mathematics. Mathematica Journal seems to have some of the ingredients to meet my goals, but I cannot distribute Mathematica freely to readers and users.

Here I describe free software that supplements the free software that many people already use. Together this gives new meaning to the hallowed words, ``reproducible research''.

The goals of this project are:

• Teach people how to merge a publication with its underlying computational analysis so the work can be verified and extended by other people using other hardware.
• Distribute my new electronic textbook.

To meet these goals I delivered my book to a traditional publisher (Blackwell Scientific Publications) on September 10, 1991. I retained the electronic rights and I grant to the public a GNU Public License to the book software. To try to overcome human resistance to installing software we plan to install binary versions of the most important code for three popular UNIX workstations. The deadline for this paper report is October 18, and the CD-ROM deadline is about November 1. All should be simultaneously available at the November 10 SEG meeting.