This is a "SEE ALSO" section

Tutorials: Variable Scoping in Perl: the basics, Coping with Scoping , Mini-Tutorial: Perl's Memory Management, Lexical scoping like a fox, Read this if you want to cut your development time in half!, Closure on Closures

Also interesting is this chain -> perlintro before/including section Variable scoping -> perlreftut, perlref#Circular References

References quick reference