Microsoft has added a new and important feature to the version of its Excel spreadsheet app made for Apple iPad tablet. For the first time, the Excel iPad app now has sheet protection features. For people who may not know what this feature is, sheet protection is a feature in some spreadsheet apps that, when enabled, keeps any of the data that in a spreadsheet from being changed or deleted. In the specific case of Excel for the iPad, it can now be enabled with either the app Sheet tab or the...
