[Documentation] Missing reference entries (DRONE_LOGS_TEXT)

I’m currently installing drone w/ gitea on a personal server and I was searching all possible configuration flags and it seems that the reference page : https://docs.drone.io/installation/reference/
Is missing some entries like DRONE_LOGS_TEXT or DRONE_AGENTS_ENABLED

I was wondering if it was normal and if there was others ?

Edit: using drone 1.6.4 the flag DRONE_LOGS_TEXT is mandatory to disable JSON logs