The Perl debugger always says: "Editor support available". I believe every one can see this, but how can I use it?
my-computer$ perl -de2
Loading DB routines from perl5db.pl version 1.33
Editor support available.
Enter h or `h h' for help, or `man perldebug' for more help.
main::(-e:1): 2
DB<1>
By the way, I got the above prompt on a Linux/Ubuntu 11.04 (Natty Narwhal) machine.