OTD #011; Revision 1.
Group: misc.
Defines a generic 'space' or 'sector' useful for delimiting or grouping the object tree in some way. Parent objects to this one are considered 'outside' the space. Child objects are considered to be 'inside' the space. The subproperties indicate various aspects of the space.
An abstract "visiblity" (or "opacity") value. This value must be a floating point number between 0 and 1. Various applications may interpret this value however it is appropriate. If omitted, any reasonable default may be assumed.
Must contain the value "true" or "false". Various applications may interpret this property as appropriate. It usually indicates whether or not it apropriate for an interactive user application to explore the children of this space as an isolated context or experience from its parents and siblings. (e.g. a 3D application may disable a feature which renders the children of a space as the entire visible world).
this type defines no new messages.