# Introduction

Siag is an X-based spreadsheet for Unix. It uses Scheme (a Lisp dialect) both for expressions and as an extension language, which makes it easy to create new functions (for native Lispers, that is). There is no requirement to know Scheme to use Siag, expressions can be entered in traditional spreadsheet syntax as well.

Siag stands for Siag Is Not An Excel Emulator. It is copyrighted by me, Ulric Eriksson, but is free for use by anybody without paying me any money. Read the file COPYING for more information.

Siag home page

Sources for Siag Office.

I can be reached at ulric@siag.nu.