| Name | Kind | Description |
| on_entry | attribute | |
| on_exit | attribute | |
| onInstanceCmd | attribute | |
| OnInstanceCmd | class | Internal enum |
| OnInstanceCmd | artifact | |
| operation | operation | return the operation |
| operationDecl | operation | returns the default declaration of an operation |
| operationDecl | operation | returns the default declaration of an operation |
| operationDef | operation | returns the default definition of an operation |
| operationDef | operation | returns the default definition of an operation |
| operationDescription | operation | return the default description |
| operationForceThrow | operation | return TRUE if the operations profile must contain 'throw()' when the operations does not have exception |
| ordered | attribute | |
| ordering | operation | return the ordering |
| os | attribute | |
| out | operation | returns the default operation 'out' parameter specification in case its type is not an enum or a type specified in the first 'Generation settings' tab |
| OutputDirection | attribute |