Which blend mode should be used?

	// Set the leanLeft animation to blend additively
	animation["leanLeft"].blendMode = AnimationBlendMode.Additive;

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Example() {
        animation["leanLeft"].blendMode = AnimationBlendMode.Additive;
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Example() as void:
		animation['leanLeft'].blendMode = AnimationBlendMode.Additive