Arm
Specifies an delay, in frames, before this projectile is able to trigger its attached warhead if it is not detonated by impacting with its target or an obstacle (such as a cliff). Defaults to '0' and has the effect of preventing a homing projectile from detonating when overshooting its intended target (common with low-ROT projectiles), hitting the target with its warhead instantly, even if the projectile did not hit.