funcWorksheetExists Returns a boolean value. This is for Excel 2010+, though may work in earlier versions. I needed a simple way, in my VBA code, to tell if a worksheet was present in the workbook.

A worksheet that is hidden by Visual Basic for Applications (VBA) code--which sets its Visible property to "xlSheetVeryHidden"--cannot be unhidden directly from the Excel user interface but may be ...

Making worksheets very hidden in Excel reduces the chances of other people accessing them. To make a sheet very hidden, set its visibility to "xlsSheetVeryHidden" in the VBA window.