Is there way to query for Contains X and Not Y?

Q & A - getting started with Tinderbox
1

I would like to run a query that $Keyword.format(“l”).icontains(“X”)ANDNOT$Keyword.format(“l”).icontains(“Y”)

I’m not sure what the symbol for ANDNOT should be.

2

X And Not Y
X & (not Y)
X & !(Y)
So

$Keyword.format("l").icontains("X") & !($Keyword.format("l").icontains("Y"))

The !(…) syntax is not formal but uses a pair of parentheses to have clarity of what it is negating.