看一下幫助,裡面有 "^n,(l*4x
INTERFACE r [ t m m'] ? ro{!X, _$,
COAT k coat coat' F^75y?
-k `.W2t5Y
+k S=(O6+U
The signs in front of k can be used to instruct ASAP to either propagate only a reflected ray (-k: t=0) at that object or to propagate only a transmitted ray (+k: r=0) at that object. 00QJ596
+ 指只有折射沒有反射光, P9
<U+\z
- 指只有反射沒有折射。