Although it is not obligatory to name components in your AUT, you neverthless make your AUT more testable by doing so.
Each supported component in HTML AUTs can have its own attribute used to identify it during test execution.
In your AUT configuration (Figure 3.13, “AUTconfiguration window: basic”) , you can define an attribute name which should be used as an identifier for components.
For example if your attribute name is testid (e.g. <div testid=''Username''></div>) then you would enter testid in the AUT configuration.