["use re '/flags'", 'customize default modifiers'],
['each $ref e.a.', 'array and hash container functions accept references'],
],
+ v5.16 => [
+ ['__SUB__', 'current subroutine reference'],
+ ['fc, "\F"', 'unicode foldcase to compare case-insensitively'],
+ ['"\N{}"', 'automatic use charnames qw( :full :short )'],
+ ],
}