It turns out, Command 4 is basically an object modifier that can be used in-game. The amount of stuff it can change is pretty significant.
One of the first experiments I tried with it was editing the Glove Charger .wop to have an ID, then changing the Charger's Data0 value. In-game, Data0 is the Charger's colour. As it turns out, it genuinely works in-game - You can change a charger's magic type.
This is a very, very quick (and shoddy) adventure I threw together experimenting with the idea. It can be broken with Blink and such, but the point of this is to show off the glove charger. You'll see what I mean.

Protip: Save before trying to recharge your gloves, just in case.