$selectedReturns the list of selected nicknames in the channel
|The form with the <window id> parameter returns an array of the selected
nicknames in the channel designated by <window id>.
The form without parameters returns an array of the selected nicknames
in the current window (assuming that it is a channel),
thus it is equivalent to calling $selected($window)
The returned value may be assigned to a dictionary too: it will be used to simulate an array.
In a non-array/dictionary context it returns the selected nicknames as a comma separated list.
|$window, $channel, window naming conventions|