Need to know what is GUID. It’s uses.
GUID is the rhino object unique ID.
The only use i have for it is when running export scripts that require objects in Rhino.
Globally Unique IDentifier. It’s an (almost) entirely random sequence of 128 bits which allows you to compare or distinguish between different objects without using a very expensive value-equality test.
GUIDs are (almost) guaranteed to be unique every time you generate one.
They contain (almost) no information.
Within Rhino GUIDs are used to distinguish many different things, including document objects, plug-ins, user-data, app instances, …