Search by object type:

Search by object type – character input string to search for object types and their classes containing the specified characters.
While input into the Search bar, only those object types and their classes are automatically displayed whose names contain these character sets.
An empty search string of object types means the absence of selection criteria, and consequently the display of all object types and their classes in the object type window.

See more fully in:

ODCLASS_description_en.htm