Each parameter of a block can be adjusted by hand. But what if you want to automate them?
Say hello to Drivers, basically Block Stacks that can be attached to a parameter creating a behavior that controls its value.
There's a few controls that's good to know about
Attach a driver
Click on the small empty rounded rectangle next to a parameter
Detach a driver
Alt+click on a filled rounded rectangle next to a parameter
Adjust value range
Slide the diamond shaped nubs on a drive parameter