Delete Column 
This button deletes the selected column from the Input Table. Follow the steps below:
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Select the column to be deleted by clicking on the column header; the column will be highlighted).
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Click the Delete Column button on the toolbar. A window like the one shown below will appear:
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Confirm the column listed for deletion is correct and click Yes to delete the column from the input table.
NOTE: There is no Undo available for deleting a column. If a column is deleted in error it will need to be recreated using Add Column.
Hot Key: Shift+Alt+C
Delete Column
