Virtual Furnace Fuel

Fuels

VirtualFurnaces have their own fuel setup separate from vanilla Minecraft. You can register your own fuels or you can even just register fuels which mimic vanilla MC's fuels.

Registering a fuel

Registering a fuel is simple.
Syntax:

register furnace fuel %itemtype% with burn time %timespan%

ItemType = the item you want to use as a fuel (note: this will only support items which MC currently allows as fuels, this is due to a limitation of MC only allowing certain items to enter the fuel slot)
TimeSpan = the time this fuel will burn for.
Example:

on load:
    register furnace fuel coal with burn time 10 minutes

Registering vanilla-like fuels

Instead of registering your fuels individually, if you choose you can just register all the vanilla fuels as virtual furnace fuels.
Usage:

register all vanilla furnace fuels

This will essentially copy all of Minecraft's fuels as virtual furnace fuels.