PMD editor: bones

This is something I randomly discovered when I was wining to myself about her knee breaking with her old bones....

***PLEASE NOTE: THAT THIS MAY BE IMPROVED WHEN I FIND AWAY FOR THIS TO NOT LEAVE GLITCHES ON ANY MODELS!***

model parts:
base: I don't know, please tell me!
eyes: ii-Miku
dress: 3D CG Rorona*

[download for full view]

ps: I think you can handle it with out the guide lines?