should this and thisown be hidden?

AFAIK every wxWidgets C++ class wrapped by wxPython has 'this' and 'thisown' member variables. They are part of the generated SWIG code, but are they ever referenced in Python code outside the wrappers? I'm just wondering if they should be named _this and _thisown or even __this and __thisown instead? Would that break a bunch of code or just change how SWIG normally works?! Every time I see those in the shell I wonder if they should be hidden.

ka