To quote variables or not

	A script that I'm refactoring has global variables in two different styles, e.g.:

$main::global->{form}->{'mailprog'}

$main::global->{form}->{mailprog}

	The quote marks don't seem to make a difference, so what would be the advantage of using them?  What are they and what do they do?  I don't recall seeing anything like this before.

Thanks,
Marc

• To quote variables or not by sono-io
• Re: To quote variables or not by John W. Krahn
• Quoting hash keys (was: To quote variables or not) by sono-io
• Re: To quote variables or not by Shawn H Corey