Nodes of different colours represent the following:
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Source Code
pure function optional_int32(input_value,default_value)result(output)integer(int32),intent(in),optional::input_valueinteger(int32),intent(in)::default_valueinteger(int32)::outputif(present(input_value))thenoutput=input_valueelseoutput=default_valueend if end function optional_int32