If you have a workbook that you are going to show to others, you may want to hide certain worksheets so some information isn't visible. Hiding a worksheet doesn’t delete any data, it just hides the sheet from view temporarily.
Ruler: This option is only available in Page Layout view. The ruler allows you to see and set tab stops, move table borders, and line up objects in the spreadsheet.
Formula Bar: With the formula bar turned on, you can see and edit formulas in a selected cell.
Gridlines: These are the lines between the rows and columns in your worksheet that make it easier to read data.
Headings: Show or hide the column headings (A, B, C, etc.) and row headings (1, 2, 3, etc.) in your workbook.