What does the pop function do?

A label, in Perl, is.

Which pertain to IO: :Handle?

How are hash references created?

What does the syntax indicate?         $lvalue=join(delimiter, list);

Which Getopt::Long Configuration variables refers to an internal error flag?

Which command line arguments are stored and how would you read command-line arguments with Perl?

Which statement is correct about Hash Functions?

What is the purpose of using the FILE literal?

Which function opens a file in writing mode after truncating the file?

Which supports FileHandle methods that correspond to Perl special variables?