In all the following examples, 
denotes an expression that returns a
numerical value.
(= 
)
Returns true if the two numbers are equal.
(< )
Returns true if 
is numerically less than 
.
(> )
Returns true if is numerically greater than .
(<= )
Returns true if is numerically less than or equal to .
(>= )
Returns true if is numerically greater than or equal to .