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2.1.1 Introduction to BOOL

The two BOOL constants are true and false. (can also be written TRUE, FALSE and True, False) They are mainly used with the commands if and while , etc., inside CoCoA programs.

The relational operators

    =  <>  <  <=  >  >=

return boolean constants (see Relational Operators).

The boolean operators are and , or , IsIn . From version CoCoA-5.0.9 not is a function (instead of an operator).