new in 0.5

api.txt

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+Refinery
+--------
+
+In order to utilize items for the refinery, they must be added to one of the following groups:
+flora, leaves, flower, sapling, tree, wood, stick, plant, seed
+
+Example:
+groups = {plant = 1, snappy = 3, flammable = 2, attached_node = 1, not_in_creative_inventory=1},
+
+Biofuel:
+--------
+
+To fill an item in the canister, it must be added to the biofuel group.
+
+Example:
+groups = {biofuel = 1, dig_immediate = 3, attached_node = 1, vessel = 1},

settingtypes.txt

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+#The time that the refinery needs to produce fuel
+fuel_production_time (fuel production time) int 10 5 360
+
+#The number of biomass required for fuel production
+biomass_input (required input) int 4 1 99
+
+#Change of refinery output between vial or bottle
+#Default is vial
+refinery_output (bottle output) bool false