shadow.py and refract.py missing in trail 2.53

[searsky]

Hello,

I just downloaded 2.53f and I was hoping to find shadow.py there as part of the examples. But it isn't there, while in vizard help it is written that it is supposed to be in the tex_lightning directory. And the same goes for refract.py.

So I wondered what went wrong and if there is a possibility of posting both missing examples on the forum. That would be of great help.

Searsky