In addition to noticing that my TAB Settings don't match those of whoever wrote this file, you'll see several of the standard error values, their symbolic names, and a brief comment describing each.

The advantage to doing this is noted in the comment at the end of the function: "do any other error logging things here."

The die statement is particularly useful if you don't want to have to comment out your code, and you only want everything up to the error and the error displayed and nothing after.