This directory contains the NCBI ToolKit documentation, such as it is. Be warned that this is sadly, often behind the tools themselves, and that we have not had the time or resources to document as fully as one would like. Look also in the demo directory at the .c files which give many examples of using the toolkit. Be sure to look over the .h files at the end of each chapter (or better yet, from the toolkit itself) where the definative list of functions and arguments are to be found. This document is a Microsoft Word for Windows document. Be sure to transfer it in binary mode. If you want to use it on a Mac, the Mac MS Word will convert it on input. However, due to differences in fonts, you will need to update the main table contents. Also, in the Mac print dialogue, be sure to use the "Color/Greyscale" option to see the figures properly (you don't need a color printer, it's the greyscale we need). Older versions of Word will not be able to read this file. This is not an endorsement or recommendation for MS Word, it just happens to be the word processor we used to make it. The document is about 300 pages long. If you would like a hardcopy, we will send you one. Just email to toolbox@ncbi.nlm.nih.gov, or phone 301-496-2475 and ask for a hardcopy of the software toolkit manual to be mailed to you. Be sure to give us your name and address.