If you thought more than 70 was a lot of CFML tags, you'll be overwhelmed by the number of CFML functions—over 250! Although that might seem like a huge number of new things to learn, you should make your best effort to get as familiar with as many of the CFML functions as you can. By using the built-in functions, you can accomplish critical tasks quickly and efficiently instead of trying to write your own tags to do the same work (which is almost always less efficient).
In reading about CFML tags, you were introduced to a few of the CFML functions as well. This section reviews several more of the key CFML functions. To help you understand them a little better, they are grouped as follows: