This modification was submitted as a utility, and as such is a great submission. The documentation that comes with the file is probably the simplest and clearest guide to DAT editing available. It is very informative while still not being intimidating, and the abundance of quality examples available in the editor helps understanding the tutorial immensely. The units created for the file range from novel to quite advanced, and all are well done.
The only slight drawback is that currently most people have moved from genied1 (the program the tutorial is written for) to Advance Genie Editor (AGE), making much of this tutorial at first seem now not as useful. But a solid understanding of genied1 is very important still even though the modder may use it less. There are still things that need to be done with genied1, and the tutorial will still help the person who only wants to use AGE better understand what it is they are doing.
As someone witha lot of experience in dat editing I was still able to get quite a few things out of the documentation, and saw many things in the dat file I never thought of. It is ideal for those who have fooled around with AGE but now realize they need a better understanding of basics, or even for those who have never done any modding but would like to start.