comment of pilot operation procedure required
operations of some models are so complications that I will forget once in the game, although I have just read carefully on the model page.
Even that, the submarine and the recycble rocket model of myself, one month after my development, I will forget how to operate. I would like to have POP comment information integrated into the model tightly, not only on the webpage, I could press some keyboard short cut button to pop up the POP information, and operating while reading.