D3Commands-1.4.2.jar is a release file of the Minecraft mod D3 Commands for Forge, made for Minecraft 1.12.2. It was published on October 3, 2019 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the D3 Commands mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.