Draws a line starting at from towards to.

	var target : Transform;
	function OnDrawGizmosSelected () {
		if(target != null) {
			// Draws a blue line from this transform to the target
			Gizmos.color = Color.blue;
			Gizmos.DrawLine (transform.position, target.position);
		}
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public Transform target;
    void OnDrawGizmosSelected() {
        if (target != null) {
            Gizmos.color = Color.blue;
            Gizmos.DrawLine(transform.position, target.position);
        }
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public target as Transform

	def OnDrawGizmosSelected() as void:
		if target != null:
			Gizmos.color = Color.blue
			Gizmos.DrawLine(transform.position, target.position)