any mark character. Single letter properties may omit the brackets,
so that can be written C<\pM> also. Many predefined character classes
are available, such as C<\p{IsMirrored}> and C<\p{InTibetan}>. The
-names of the C<In> classes are the official Unicode script and block
-names but with all non-alphanumeric characters removed, for example
-the block name C<"Latin-1 Supplement"> becomes C<\p{InLatin1Supplement}>.
+recommended names of the C<In> classes are the official Unicode script
+and block names but with all non-alphanumeric characters removed, for
+example the block name C<"Latin-1 Supplement"> becomes
+C<\p{InLatin1Supplement}>.
Here is the list as of Unicode 3.1.0 (the two-letter classes) and
as defined by Perl (the one-letter classes) (in Unicode materials