1. 1. Perl Features
2. 2. Advanced Features in 5.10
3. 1. 2.1. Advanced Features
   2. 2.2. defined or
   3. 2.3. Turn on features explicitly
   4. 2.4. say
   5. 2.5. feature is a lexical pragma
   6. 2.6. static variable (with scope)
   7. 2.7. state variable
   8. 2.8. regex: Named capture buffers
   9. 2.9. Possessive quantifier
   10. 2.10. smartmatch ~~ - Don't use it!
   11. 2.11. Smart match example - Don't use it!
   12. 2.12. switch - Don't use it!
4. 3. New features in 5.12
5. 1. 3.1. Perl 5.12 features
   2. 3.2. Implicit stricture
   3. 3.3. use parent
   4. 3.4. package NAME VERSION
   5. 3.5. Yada Yada Operator...
   6. 3.6. each on arrays
   7. 3.7. delete local