[ale] HOW2 use -> documentation of ~.tex files ?

[ccthomas at joimail.com (Courtney Thomas)]

I've, for the first time, encountered documentation in the form of ~.tex
files, for a scientific suite of programs and don't know how to make use
of it.

For example, how do you just simply view the files ?

What's the merit of using Tex for documentation vis-a-vis alternatives ?

Guidance appreciated,

Courtney