Caselec: The only reason I believe you is that I also have encountered a panel labled in Chinese- here in Reno!
I like lebeling the circuits, but I often do not use the provided piece of paper. What, with all the other stuff in a panel, the doors that open upwards (as in an all-in-one), and the tiny spaces provided, I'm just not happy using the provided sheet or sticker.
So, what do I usually do? Well, when hooking up the circuits, I often write something on the breaker itself. Then, when the faceplate is installed, I use a leble printer to make a sensible lable, and post it right next to the breaker.
The most important part of identifying circuits is to lay them out in a sensible way in the first place. This is impossible to do if you insist on using the absolute minimum number of circuits, or do things like having the GFI in one room serve other locations as well!
Likewise, if you ignore NEC advice to allow for future growth, you can be sure that a few remodels down the road the panel directory will be only so much fiction.
In more specialised situations, I have also copied the "emergency exit drawing," used highlighters to identify areas of circuit coverage, and pasted that to the door of the panel.
