Why is proxy.config.cache.select_alternate undocumented?

[Hiroaki Nakamura]

Hi,

I found the config proxy.config.cache.select_alternate is undocumented.
Could you tell me the reason?

I would like to disable proxy.config.cache.select_alternate.
That is, I don't want to use alternates and I want touse the same cache
for the same URI but different user agents.

I tried setting proxy.config.cache.select_alternate to 0 and confirmed
it works as expected.

Will proxy.config.cache.select_alternate be supported in the future version
of ATS?

Thanks,
Hiroaki