Numbers to words in SAS

Let me start. I am learning SAS software now and I am realy impressed with the kind of work it can do. So Let me share some things that is really cool about the software. Since i am also learning it right now, it may be simple. Let me assure you that as days progress, the complexity also will increase.
1.What is the use of this statement?
format total words22.;
The answer is it helps you to convert the numbers to words. For example if you have a variable called total which has the total in numeric. If you have to convert it into words, you can use the above statement. The syntax is
format words22.;
The variable name is not optional.