Deletes the selected text. If the selection is empty, deletes the specified number of characters to the left of the cursor.
document.selection.DeleteLeft( [nCount ] );
document.selection.DeleteLeft [ nCount ]
Optional. Specifies the number of characters to delete to the left of the cursor. The default is 1. If negative, the method acts like the Delete Method. If 0, the method acts like 1.
Supported on EmEditor Professional Version 4.00 or later.