=over =item $LIST_SEPARATOR =item $" X<$"> X<$LIST_SEPARATOR> When an array or an array slice is interpolated into a double-quoted string or a similar context such as C, its elements are separated by this value. Default is a space. For example, this: print "The array is: @array\n"; is equivalent to this: print "The array is: " . join($", @array) . "\n"; Mnemonic: works in double-quoted context. =back