[chirp_users] r-tone freq

[K0LNY_Glenn]

Hi,
I had obtained my original CSV file that I import into different radios, 
with editions, according to the radio.
I was wondering about the r-tone freq column.
All of mine are 88.5, and I'm guessing that r-tone is receive tone, which if 
it is that, I think that I will only hear other radios with the same r-tone 
frequency.
Is this what the r-tone freq is?
If so, I will remove all of them.
Thanks.

Glenn