看一下幫助,裡面有 ;#3ekl{-g
INTERFACE r [ t m m'] ? "_ LkZBW.
COAT k coat coat' 89zuL18V
-k ^DBD63N"
+k q}>M& *
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. |/@0~O(6
+ 指只有折射沒有反射光, sf Dg/ a
- 指只有反射沒有折射。