First of all User Defined Functions as specified within the Formulas properties of your app. Just like Named Formulas. In the above example we can see that the structure is fairly similar.

Microsoft’s SQL Server may be a big dog in the enterprise database market, but its conspicuous lack of user-defined functions (UDFs) has stacked up poorly against other leaders of that pack ...

JavaScript variables hold a wide variety of information and can be used with virtually any data type. Here's how to use variables to store numbers, text strings, objects, and more.