Here is a tutorial to lock or hide only the formula cells in an Excel workbook. You can also lock formulas in all worksheets in a workbook.

Once all the workbooks are closed, the Application.Quit statement closes Excel. If you want to leave Excel open, you can comment out this statement. If Excel is open, close it.

A complex Excel 2007 workbook could require multiple sheets. By default, Microsoft provides three sheets on each workbook, but you can add as many as you need.

You can easily hide and unhide columns in Excel by individually revealing hidden columns or using the "Format" option to unhide all hidden cells.

Hiding and then unhiding columns in Excel only takes a few clicks. In this guide, we'll show you how to hide columns and bring them back in no time at all.