class VLI<2.0.1 cpan:DLUGOSZ> 
	   does Compact
	   {
	   # implements packing/unpacking as described in <http://www.dlugosz.com/ZIP2/VLI.html>
	   has Int $.value is rw;
	   multi pack (*%adverbs) returns Buf
		{
		... respects standard signed/unsigned option,
		   supports unique options for encoding variations
		}
	   } # end class VLI