Name 

Description 

Associating a Message Link with a Method 

Message links can be associated with the methods of the recipient class. The methods can be selected from the list of existing ones or can be created. This is done by two commands provided by the message context menu: Add and Choose method.
You can use the Operation field in the Object Inspector to rename the method. A dialog box appears asking if you want to create a new method or rename the old one. 

Generating an Incremental Sequence Diagram 

You can generate incremental sequence diagrams from a previously-generated sequence diagram. In some cases, you can have generated a sequence diagram with a low nesting value such as 3 or 5. The nesting value limits how deep the parser traverses the source code calling sequence.