while(true) ???

im confused. I kow how a while loop works and what it does but im stumped on this line while(true)… while what is true??? i dont get it. here is the code that is in question copied from the fps tutorial ai sript.

function Start () {
	// Auto setup player as target through tags
	if (target == null && GameObject.FindWithTag("Player"))
		target = GameObject.FindWithTag("Player").transform;
		animation["idle"].wrapMode = WrapMode.Loop;


function Patrol () {
	var curWayPoint = AutoWayPoint.FindClosest(transform.position);
	while (true) {
		var waypointPosition = curWayPoint.transform.position;
		// Are we close to a waypoint? -> pick the next one!
		if (Vector3.Distance(waypointPosition, transform.position) < pickNextWaypointDistance)
			curWayPoint = PickNextWaypoint (curWayPoint);

		// Attack the player and wait until
		// - player is killed
		// - player is out of sight		
		if (CanSeeTarget ())
			yield StartCoroutine("AttackPlayer");
		// Move towards our target

so what is going on here can someone please explain.

It means ‘do this loop forever’ which, unless there were yields there (or early returns), would hang a program. In this case, it means this script will execute those commands until the game stops or the object it’s on is destroyed or disabled.

A while loop continues to loop as long as the condition is true. Since true is always true, while (true) is an infinite loop.