['<code>${^LAST_FH}</code>', 'last read filehandle (used by <code>$.</code>)'],
['<code>/(?[ a + b ])/</code>', 'regex set operations (character subtraction <code>-</code>, union <code>+</code>, intersection <code>&</code>, xor <code>^</code>)', {experimental => 'regex_sets', stable => v5.36}],
['<code>my sub</code>', 'lexical subroutines (also <code>state</code>, <code>our</code>); buggy before v5.22', {experimental => 'lexical_subs', stable => v5.26}],
['<code>${^LAST_FH}</code>', 'last read filehandle (used by <code>$.</code>)'],
['<code>/(?[ a + b ])/</code>', 'regex set operations (character subtraction <code>-</code>, union <code>+</code>, intersection <code>&</code>, xor <code>^</code>)', {experimental => 'regex_sets', stable => v5.36}],
['<code>my sub</code>', 'lexical subroutines (also <code>state</code>, <code>our</code>); buggy before v5.22', {experimental => 'lexical_subs', stable => v5.26}],