- * Cancel a pending operation. Releases all resources
- * of the operation and will ensure that no event
- * is generated for the operation. Does NOT guarantee
- * that the operation will be fully undone (or that
- * nothing ever happened).
+ * This function is used to signal that the event information (struct
+ * GNUNET_TESTBED_EventInformation) from an operation has been fully processed
+ * i.e. if the event callback is ever called for this operation. If the event
+ * callback for this operation has not yet been called, calling this function
+ * cancels the operation, frees its resources and ensures the no event is
+ * generated with respect to this operation. Note that however cancelling an
+ * operation does NOT guarantee that the operation will be fully undone (or that
+ * nothing ever happened).