- * Base class for all operations. If you perform an action it is reasonable to create
- * operation intended for this. This is a base class for all operations which provides
- * mechanism for correct starting operations, starting operations above already started
- * ones, committing operations and so on. To create own operation it is reasonable to
- * inherit it from this class and redefines virtual methods to provide own behavior
+ * This is an action-like operation, which modifies the structure of data through
+ * starting/comitting transactions in the document. This operations are single stepped,
+ * and have no filled property panel, like Delete/Detach.