[fpc-pascal] commutative operators

[David Emerson]

suppose I define an operator:

operator + (a: one_type; b: another_type) : one_type;

Is there any way to specify that it should be "commutative", so I don't have to 
additionally define the reverse:

operator + (a: another_type; b: one_type) : one_type;

Thanks
~David.