You can only check user-defined or named shortcut task list items. You can delete user-defined or named shortcut items directly; other types of task list items are deleted by the application that generated them. For example, you can delete a Comment task from the Task List by deleting it in the source code. Still other types of task list items such as Compiler tasks can be checked but not deleted.
To mark a user-defined or named shortcut task as completed
Checking the item as completed puts a line through the item.
To delete a user-defined or named shortcut
Caution You cannot undo deletion of a task.
To choose multiple contiguous tasks
To choose multiple discontiguous tasks