Problems, bookmarks, tasks and other markers
  Markers are objects that may be associated with Workbench resources. There are many uses of markers in the
  Workbench, including providing support for bookmarking resources or locations within resources, tracking ongoing
  tasks, or displaying error messages. See the related tasks section for more details.
  Bookmarks
  Tasks view
  Markers
  Creating a bookmark within a file
  Creating a bookmark for an entire file
  Deleting a bookmark
  Adding line items in the Tasks view
  Associating a task with a resource
  Deleting tasks
  Filtering the Task view
  Automatically fixing problems