And
  

Returns logical value: 1(True) or 0(False).

syntax
And(number1;number2;[number3;...])

insert
logical value: 1 or 0.

example
And(1;1) = 1
And(1;0) = 0
And(2>1;3>2) = 1
And(2>=1;3<2) = 0
If(And(2>=1;3<2);10;20) = 20