OSI class declaration
The OSI class declaration consists of the class header and the OSI class definition for the class (osi_class_def). The class header is structured the same way as class headers for ordinary classes. The class declaration can be preceded by an update option. The class will be completely replaced when passing "new". Passing "update" or no update option the class will be updated.
Definition:
osi_class_dcl := [update_option] class_header [ osi_class_def ] ';'