asterisk users - Mar 2019 - "Searches the entire stack of CDRs on the channel." ??

Hi.

I'm reading https://wiki.asterisk.org/wiki/display/AST/Function_CDR

and wondering what "r - Searches the entire stack of CDRs on the
channel."
means.

Can anyone help with understanding this?


Thanks,


Antony.

-- 
Normal people think "If it ain't broke, don't fix it".
Engineers think "If it ain't broke, it doesn't have enough features
yet".

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