The nand block is a boolean block that outputs the nand logic gate. It outputs true unless both values inside it output true. To get this block, one must add the "Operators Expansion" extension.

() nand ()
...
[[File:|200px]]
Caption
Block Type Boolean
Category / Extension Operators Expansion
Status Who tf uses status

Workaround

This block can be worked around by putting an "and" block inside of a "not" block.