Topic: The object about itself knows not everything, but owes itself .
There is a certain visualization of algorithm in a type of the graph. This algorithm is a function with input and output parameters. Any parameter is simply variable. And the variable does not know and should not know about itself - input it parameter or the day off. But. Any variable itself in a type the column. And so input and output parameters differently themselves should, but they in themselves do not know input they or days off. How ? To add a flag in - not a variant.