//This reference was written for Fallout 4 and may be only partially applicable to other games.// **This page is under construction.** ==== Terminology ==== * **BA2:** A ''.ba2'' file, short for Bethesda Archive 2. Combines multiple data files into a single file with optional compression. * **Module:** Any ''.esm'', ''.esl'', or ''.esp'' file. Also referred to as a Plugin. {{section>references:modding_limits#archives_(ba2)&nouser&nodate}}