I have now had some time to familiarize with the new DMDv3 wallet/network. There's a big difference between DMDv2 and DMDv3, POS rewards seems hard to acquire, but I assume that's good for network security. In the wallet, in coin control inputs there's a button to "Toggle Lock State" I'm not familiar with. What's the idea behind it and how is it supposed to be used?

Thanks to the DMD team for the efforts put in Diamond development.