Description : This class is intended for storing different object attributes that
have only two states (0 and 1).
- Avalable attributes:
+ Available attributes:
- IS_VISIBLE - is equal to 1 if object is visible in 3D view (0 - overwise).
+ IS_VISIBLE - is equal to 1 if object is visible in 3D view (0 - otherwise).
This attribute is valid for active view only.
*/