This device is made to block certain values on a dial or slider, a typical example would be the Value Blocker controlling an arpeggiator sync rate and blocking 1/3, 1/6, 1/12 etc. so when you twist your dial it will skip these values and you can go straight from 1/2 to 1/4 to 1/8. It can be used on any parameter.
Click the box on the bottom left then click the parameter you want to map, use the Control dial to choose a value you want to block and press the block button. Blocked values will show up in the text box below the buttons and you can even write them in yourself, they will always display as integers. To reset the list press the reset button.
The idea for this device and its name was initially proposed to me by dmyra