Expression
A combination of functions, operators, variables, and constants that yield a numeric result. An expression can perform a calculation or test data.
Examples of legal expressions:
Flag(1) = False
A > B
Flag(2) And VBlk1(1) > 12.5
(TBlk2(3) > 5 Or TBlk2(4) < 7) And (Flag(3) Or Flag(5))