-- place and dig node - stop when it has all been converted to something else
-- dirt to bones
-- gravel to flint
if not m then
	b="default:dirt" -- block to place and dig (must be placed in storage)
--	b="default:gravel"

	m=0
	if read_node.forward()==b then m=1 end
elseif m==0 then
	if not place.forward(b) then self.remove() end ; m=1
else
	if not dig.forward() then self.remove() end ; m=0
end