在早期的版本 3ds Max 7 使用的CAT 2.x版本中是把这两个操作分成一组
[ Manipulation Locks ]
Stretchy Bone
Effect Hierarchy

而在高版本比如3ds Max 2013 中是将 Manipulation Causes Stretching 分配到 Setup Mode 和 Animation Mode 中以单独设置各Mode下是否开启拉伸效果. 其它的Locks都基本相同:

Lock Local Position 是锁定骨骼不受移动操作影响
When on, the position of this bone is locked.  If you try to move it,  it will not move, but try to move its neighbors if Manipulation Affects Neighbors In Hierarchy is on.

Lock Local Rotation 是锁定骨骼不受旋转操作影响
When on, the rotation of this bone is locked. If you try to rotate it, it will not rotate.

Lock Local Scale    是锁定骨骼不受缩放操作影响
When on, the size of this bone is locked. If you try to scale it, it will not resize.

Manipulation Causes Stretching 是允许该骨骼被拉伸, 如果关闭此选项, 那么移动此骨骼就会移动其子骨骼.
When on, moving this bone causes it to stretch. When off, moving the bone moves its children.