cfgguide – Documentation of LaTeX configuration options

Doc­u­men­ta­tion of tech­niques used to vary the con­fig­u­ra­tion of a LaTeX in­stal­la­tion.
Part of a set of doc­u­men­ta­tion that also cov­ers new LaTeX 2e com­mands, font-han­dling, class and pack­age writ­ing, type­set­ting Cyril­lic, and LaTeX font en­cod­ings, LaTeX font en­cod­ings, mod­i­fi­ca­tion of la­tex.