duplicates sample entries from comments.
# host DATABASE USER CIDR-ADDRESS METHOD [OPTION]
# hostssl DATABASE USER CIDR-ADDRESS METHOD [OPTION]
# hostnossl DATABASE USER CIDR-ADDRESS METHOD [OPTION]
-# host DATABASE USER CIDR-ADDRESS METHOD [OPTION]
-# hostssl DATABASE USER CIDR-ADDRESS METHOD [OPTION]
-# hostnossl DATABASE USER CIDR-ADDRESS METHOD [OPTION]
#
# (The uppercase quantities should be replaced by actual values.)
# The first field is the connection type: "local" is a Unix-domain socket,