[Perl] gives you the STDERR filehandle so that your program can make snide comments off to the side while it transforms (or attempts to transform) your input into your output.
Larry WallI've had to learn kind of sense when the questions would be coming and be ready to handle them. There's a lot of education and reiteration that happens on these online channels and sometimes it's tempting to just say, "Well, just go and read the documentation," but you know, people appreciate being led along and taught and mentored.
Larry Wall