Perl: How is "start perl.exe <filename>" different from "perl.exe <filename>"

Question

I'm quite new to perl, and I've asked a friend about this and he said something about "parlor execution". What does this mean?

EDIT:

This is in Command prompt

Answer 1

start causes Windows to create a new command prompt window to run the command, freeing up the original prompt. For example, open a command prompt and compare ping -t 8.8.8.8 to start ping -t 8.8.8.8.