
Views, sortings, and filters dialogs
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There are three buttons on the toolbar for launching dialogs to select
and manage views, sortings, and filters.  These three dialogs are very
similar, differing only in the type of item being managed.  Each one
has the following components:

**Current View/Sorting/Filter**
   The name of the currently selected item.  If this is one of the
   pre-defined items such as "All Columns", "Selected Column", "All
   Rows", or "Quick Filter", the edit and delete buttons are disabled.

**Edit**
   This button, to the right of the selected item name, launches the
   *view editor*, *sorting editor*, or *filter editor* to modify the
   currently selected item.  If the edit dialog is accepted, the
   changes will be immediately applied and you will be returned to the
   *data viewer*.

**Delete**
   This button, to the right of the edit button, deletes the curently
   selected item.  You will be returned to the data viewer with the
   default item of that type selected and applied (there is no default
   sorting, so after deleting a sorting the rows will not be sorted).

**New View/Sorting/Filter**
   This button, below the name of the currently selected item,
   launches the view editor, sorting editor, or filter editor in order
   to create a new item of the appropriate type.  If such an item is
   created, it will be set as current and you will be returned to the
   data viewer.

**Views/Sortings/Filters list**
   Below the "New..." button is a list of the existing items of the
   appropriate type.  Clicking on one of these will apply it and
   return you to the data viewer.  If you wish to edit or delete the
   item, you can then launch this dialog again to do so.
