['/(?{ m// })/', 'regular expressions can be nested in /(?{})/ and /(??{})/'],
["use re '/flags'", 'customize default modifiers'],
['each $ref e.a.', 'array and hash container functions accept references'],
['/(?{ m// })/', 'regular expressions can be nested in /(?{})/ and /(??{})/'],
["use re '/flags'", 'customize default modifiers'],
['each $ref e.a.', 'array and hash container functions accept references'],