---context:global   # following code refers to global config

# the elevation parameters

assign downhillcost 0
assign downhillcutoff 1.5
assign uphillcost 0
assign uphillcutoff 1.5

---context:way   # following code refers to way-tags

assign turncost 0
assign initialcost 0

assign costfactor
  switch or waterway=canal or waterway=river or waterway=fairway waterway=lock_gate  1
  100000

---context:node  # following code refers to node tags

assign initialcost 0