The shortcut which appears in the application list is called the Jump list.
The feature of a jump list is as follows:
- The jump list (alphabetic shortcuts) appear between groups of items when there are 45 or more items in the applications list.
- The application list goes back to normal when number of apps are reduced. Specific shortcuts will appear/disappear depending on whether items beginning with that letter are included in the list.
- The apps are automatically sorted alphabetically and cannot be manually changed.