You are trying to install or open an app that didn't come from the Mac App Store but you got a message saying App can't be opened because it is from an unidentified developer. This is how you bypass it.
Google spreadsheets lets you create charts and graphs to visualize a data set. Let's take a look how to create a nice and simple chart in a matter of few clicks.
Not sure if that really is the correct name of the recipe, but one thing I do know for sure, that this is one delicious way to prepare your potatoes and a great side dish to your meals.