Reference: eLL plugin (freeware)
shotty ea example:
Code:

---

include <eLL.wdl>;

define _stuffIndex, skill22;
var stuffIndex = -1;

entity* eThing;
var i0; 
var thingCount;
/*******************************
	aKnowsJack
		a parent of jack's things
*******************************/
action aKnowsJack {
	stuffIndex += 1;
	my._stuffIndex = stuffIndex;

	eaAdd(my._stuffIndex, ent_create(<dirtySocks.mdl>, my.x, NULL));
	eaAdd(my._stuffIndex, ent_create(<pantyHose.mdl>, my.x, NULL));
	eaAdd(my._stuffIndex, ent_create(<duckTape.mdl>, my.x, NULL));
	eaAdd(my._stuffIndex, ent_create(<ammonium_nitrate.mdl>, my.x, NULL));
	eaAdd(my._stuffIndex, ent_create(<fuel_oil.mdl>, my.x, NULL));
	while(me != NULL) {
		//...
		i0 = 0;
		thingCount = eaGetCount(my._stuffIndex);
		while(i0 < thingCount) {
			eThing = eaGet(my._stuffIndex, i0);
			if (eThing != NULL) {
				vec_set(eThing.x, my.x);
				eThing.frame = my.frame;
			}
			i0 += 1;
		}
		//...
		wait(1);
	}
}

---