This dialog appears when you right-click a table and select Show Column from the shortcut menu. All columns in the table are listed in the dialog. You can choose to show or hide some of them by checking or unchecking the box before the desired column names. See the dialog.
Auto Sort
If checked, the columns will list alphabetically; otherwise, the columns will list according to their orders in the table.
OK
Applies the changes and closes the dialog.
Cancel
Cancels the changes and exits the dialog.
Help
Displays this help document.