stringify question

[Ruth Albocher]

hi
I have started learning perl recently as I need to maintain someone's
old code.
under 'use overload'  along with other 'normal' overloaded operators he
has: qw("", stringify)
i understand each word separately.. but.. where's it invoked and how?
is there a recommended site i can look things like this up (other than
the man and the camel)?
thanks,
ruthie