Caddy `try_files`?

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3

So, when I visited document, I did ctrl+f for try, hence I couldn’t find anything.

what exactly to does? I thought it is used in rewriting the paths but does it also make Caddy look into the locations?

So I found this old thread which seems to do what I was trying to accomplish: Serve files in root before passing to proxy - #4 by k4ml

but I was not able to understand these to blocks:

rewrite {
    if {path} is /
    to /proxy/{uri}
}
rewrite {
    to {path} /proxy/{uri}
}