Sanity checking my alert config

In alerts.cfg, I have this:

HOST=* COLOR=red,purple SERVICE=msgs
         MAIL $ADMINMAIL
HOST=* COLOR=red,purple
         IGNORE SERVICE=msgs
         MAIL $ADMINMAIL RECOVERED

My goal with this is to see alerts for purple and red statuses for all tests, and then get recovery alerts for all tests except msgs.  Did I do the config right for that?

I would also like to see if I can get a legend for the alerting grid in the "info" page.  Here's a screenshot showing what the above config produces:

https://www.dropbox.com/s/6wvutxctcn4uztf/xymon-alerts-elyograg.png?dl=0

I'd like to know what "(R)" and "(S)" mean, and what the line where the email address is blue means.

Thanks,
Shawn