Why should I use them?

(This section is intended for composers)

There are of course some good reasons for using them:

• Every OPENCP user sees your description automatically when he moves the cursor over the file
• The module type is also stored in .MDZ files, so you can explicitely force OPENCP to play your Module in Protracker (or FastTracker) mode, for example.
• Even if the user does not use OPENCP, he can still read your description, because .MDZ is a simple, human readable text format
• Creating .MDZ files is almost no extra work (you can create a complete .MDZ file from within OPENCP in less than one minute)

So, as you see, using .MDZ files has many advantages, but (almost) no disadvantages. It is surely worth trying.