[SQLObject] Naming conventions

Does anyone have an opinion on the names of the magic variables? 
(_columns, _idName, etc)

I didn't really think about them when I first created them, and now they
look wrong to me.  Should they be public variables, like columns? 
Should they be magic like __columns__?  If I go with magic, I wonder if
I should make them more most normal magic variables, like __id_name__ or
__idname__ instead of __idName__...

Thoughts?

  Ian