Weight for Pose Tolerances - inverseKinematics

I need clarification on what exactly the weights parameter does in the call to inverseKinematics. The following is the documentation, but it is not clear to me:

"Weight for pose tolerances, specified as a six-element vector. The first three elements correspond to the weights on the error in orientation for the desired pose. The last three elements correspond to the weights on the error in xyz position for the desired pose."

What does pose tolerance mean, and if I assign a weights, say, [0, 1, 1, 0, 1, 1, 0] what does it do for me?

[Yiping Liu]

Do you have a particular IK problem that you try to solve?

[N]

For now, I am using the examples, but eventually I will have my own problem, yes. But don't understand the weights.