hello, friends

I am a new, and poor English ability

my question is:
http://www.sidefx.com/docs/houdini15.0/shade/build [sidefx.com]
Shader building tutorial >Energy conservation
“……You can optionally guard against this by clamping the amount of light in the BSDF at 1 before sending it to the output, using a ??? ”

can you tell me?

thank you very much!

I've submitted a bug for this #72877