The array containing the command-line arguments intended for the script.

The array containing the list of places to look for Perl scripts to be evaluated by the do, require, or use constructs.

The array into which the input lines are split when the -a command-line switch is given.

The hash containing entries for the filename of each file that has been included via do or require.

The hash containing your current environment.

The hash used to set signal handlers for various signals.