C h a p t e r Array Functions Introduction 219 DIM 219 HBOUND 223 LBOUND 223 5 Introduction Although there are only three array functions, chances are you will need to use some or all of them if you use arrays in your programs. They are all used either to determine the number of elements in, or the upper and lower bounds of, a SAS array. Function : DIM When you define an array, you can either enter the number of elements in the array in parentheses (or square or curly brackets) following the array name or you can use an asterisk (*) to indicate that you don't care to count