Relational operator.
Available values are as follows:
Relational.EQ: Equal to.
Relational.EQ
Relational.NE: Not equal to.
Relational.NE
Relational.GT: Greater than.
Relational.GT
Relational.GE: Greater than or equal to.
Relational.GE
Relational.LT: Less than.
Relational.LT
Relational.LE: Less than or equal to.
Relational.LE