LyX Document Processor
Contents Introduction
History
Features
Versions
Summary
Introduction LyX is a document processor that encourages an approach to writing based on the structure of your documents (WYSIWYM) and not simply their appearance (WYSIWYG).
LyX is for people who want their writing to look great, right out of the box
History Matthias Ettrich started developing a shareware program called Lyrix in 1995.
It was then announced on USENET where it received a great deal of attention during the subsequent years.

Presentation in lyx document processor