: Acting as a prerequisite for more complex mods, such as LSPDFR (Los Santos Police Department First Response).

The "2021" suffix marks a specific era in GTA V modding. This was a period of significant growth for "Roleplay" (RP) servers and complex simulation mods. As the game evolved through various Rockstar updates, older modding tools often broke, requiring a "2021 class" of files to bridge the gap between the original 2013 code and the modern hardware of the early 2020s.

: Helping older hardware or specific digital versions (Epic Games, Steam, or Retail) run the game more smoothly by replacing outdated game classes. The Culture of Unofficial Patches