can contain several parts delimited by double colons.
Single quotes have similar rules, but with the exception that they are not
legal at the end of an identifier: That is, C<$'foo> and C<$foo'bar> are
-legal, but C<$foo'bar'> are not.
+legal, but C<$foo'bar'> is not.
-
-Finally, if the identifier is preceded by a sigil --
-More so, normal identifiers can start or end with any number
-of double colons (::), and can contain several parts delimited
-by double colons.
-And additionally, if the identifier is preceded by a sigil --
+Additionally, if the identifier is preceded by a sigil --
that is, if the identifier is part of a variable name -- it
may optionally be enclosed in braces.