[CentOS] rsyslog.conf

I was looking at the manpage for rsyslog.conf, primarily because I need to
filter my manager's new fedora 22 logs coming to our loghost, because of
the bug that I forwarded (if it gets through).

At any rate, I am surprised: under selectors, I see that " The keywords
error, warn and panic  are  deprecated  and should not be used anymore."

Huh?

If I only want warn or more severe, how am I supposed to filter - write a
much more elaborate RE?

      mark