The current files are a revised and extended version. Much information has been added, especially about those parts of LaTeX I use most, equations and mathematical symbols. Whether or not commands are fragile has been added in most cases. Illustrative examples of usage have been added in several instances. The hypertext linking has been greatly improved. Each file now contains a revision date.
An attempt will be made to continue to improve the information here. Comments and suggestions to the email address below, especially if there are mistakes, would be appreciated.
This set of files is also available as a Unix compressed tar file which can be installed locally to provide faster access.
Much of the new information has been taken from Lamport, "A Document Preparation System:Latex," and from comp.text.tex newsgroup postings.