% language=us \startcomponent about-introduction \environment about-environment \startchapter[title={Introduction}] During the development of \LUATEX\ we wrapped up the state of affairs in articles and reports. Upto version 0.50 we tagged them as \quote {\MKIV} (the transition from \MKII), while for the next 0.25 versions we bundled them in \quote {hybrid} (the rewrite of \CONTEXT). The next series goes under the name \type {about} as one might wonder what all this \LUATEX\ and \CONTEXT\ is about. After all we've now reached a state where we can think about future applications instead of improving older features as that process is ongoing. As we're a bit beyond experimenting now, the focus will be on practical usage and of course we target on applications that the \LUA\ and \TEX\ combination makes possible, either new or in a renewed form. Some of the chapters will eventually become part of manuals. As with the two preceding collections of \LUATEX\ development stories, \quote {mk} and \quote {hybrid}, this one, called \quote {about}, covers a stretch of development, mostly between versions 0.50 and 0.75. The forth stretch, upto 1.00 is covered in \quote {still}. \startlines Hans Hagen Hasselt NL 2013\endash2015 \blank \type {http://www.luatex.org} \type {http://www.pragma-ade.com} \stoplines \stopchapter \stopcomponent