(You probably know this, but for all readers: PICS
has been superseded by POWDER.)
What you got there:
pics-1.1 gives the version number of the PICS
http://www.icra.org/ratingsv02.html is the service
identifier (which is a unique identifier for the chosen rating
l is a shorthand for
gen true for "…" means that the following label can
be applied to any URL that starts with
the URL is used as a prefix, similar to robots.txt’s
r is a shorthand for
ratings, which gets
followed by a parenthesized list of categories and values.
So your PICS
meta element contains 4 general
labels, where each label is an ICRA rating. Why 4? Probably because
the site URL design requires it (but maybe those general labels
were used here unnecessarily).
I have no idea what this rating is actually saying, as the
ICRA labeling engine has been discontinued.