OperationHandle :: Open - Open operation handle
To execute operations the operation handle must be opened. After opening the operation handle an expression or a function can be associated with the operation handle for being executed.
Return value:  Success ( logical  )
Implementation overview
-  - internal feature (not documented)
 OperationHandle :: Open ( dict_hdl, res_db, ob_handle, prop_hdl )
-  - internal feature (not documented)
 OperationHandle :: Open ( prophdl_ref )
Implementation details
- 
- internal feature (not documented)
 logical OperationHandle  :: Open ( DictionaryHandle &dict_hdl, DatabaseHandle &res_db, DBObjectHandle &ob_handle, PropertyHandle &prop_hdl )
 - dict_hdl
 - Dictionary handle
This is a reference to an opened dictionary handle. 
- res_db - - internal feature (not documented)
- ob_handle - - internal feature (not documented)
- prop_hdl
 - Property Handle
Is a reference to an (usually) opened property handle. 
 to list
- dict_hdl
 - Dictionary handle
- 
- internal feature (not documented)
 logical OperationHandle  :: Open ( PropertyHandle &prophdl_ref )
 - prophdl_ref - Reference to Property handle
 to list

