This can be useful when a variable is bound to a sub-routine or object method which you want to call but aren't interested in the value returned.
Variables may be assigned the values of other variables, unquoted numbers (2.718), literal text ('single quotes') or quoted text ("double quotes").
This requires POP3 access, which most email providers support nowadays, but if not, you’re probably not going to be able to get all your old email moved over.
This behaviour can be a little unpredictable (and may well be improved upon in a future version).
If you know what you're doing with it and you're sure that the variables in question are defined (nor not) as you expect them to be, then you can rely on this feature to implement some powerful "global" data sharing techniques.
0,recommended Playlist=video Details.recommended Video Playlist