what is the exact meaning of performance limited gross weight VR

[idisaid]

when I study windshear recovery method , I found a performance limited gross weight rotation speed and actual gross wight Vr. What are these?

[galaxy flyer]

Perf Limited Vr would be the maximum gross that could be lifted under the existing conditions, actual gross weight Vr is the Vr at the, guess here, actual gross weight. It an indication of the excess performance available under the conditions.

GF