Release.priority

release.priority(n);

Turns on the automatic priority choice for the object n. The priority is set depending on the vertical coordinate of the object. This way, as an object moves down it approaches the viewer. See section Priority bands and control lines for a table of y coordinates and the associated priorities.

<	y	<	priority
0		48	4
	60	5
	72	6
	84	7
	96	8
	108	9
	120	10
	132	11
	144	12
	156	13
	168	14

< y < priority 0 48 4 48 60 5 60 72 6 72 84 7 84 96 8 96 108 9 108 120 10 120 132 11 132 144 12 144 156 13 156 168 14

This way, as an object moves down it approaches the viewer.

AGI_Command_Reference_-_Object_Description_Commands#release.priority.28n.29.3B