I'm not shure about it in formal standart, but i beleave -
most ppls used underline symbol as prefix for private
members. At least Microsoft think that.
I wanna ask you for little automations - when your
refactor encapsulate field, its possible to provide
default name for public member is w/o underline
symbol if private member prefixed with underline?
As i remember, defaul VS refactoring do it