The Index sheet contains links to all of the other sheets in the workbook. You can use this sheet to jump quickly to another sheet in the workbook, especially when that workbook contains many sheets. The Bulkload utility does not read or modify this sheet.
SheetName
Contains links to other sheets. Click a link to jump to that sheet in the workbook. When you add new classes to a workbook, you should update the Index sheet with the name of the new class, a comment, and a hyperlink to the sheet. See the Excel documentation for more information about how to do this action.
Remarks
Contains comment text to describe each sheet.
You can add columns to the Index sheet as needed.