2.4 Now start work!

LilyDev users may now skip to the chapter which is aimed at their intended contributions:

These chapters are mainly intended for people not using LilyDev, but they contain extra information about the “behind-the-scenes” activities. We recommend that you read these at your leisure, a few weeks after beginning work with LilyDev.

LilyPond — Contributor’s Guide v2.19.14 (development-branch).