Whetstones are small hard stones used for sharpening your weapon. To use them:
o You have to either wear the whetstone on your belt or hold it in your hand. o You have to WIELD the weapon you want to mend. o You then use the command WHET to get your weapon back into good shape. o Note that using them requires a great deal of time and energy so you will lose movement points. o If no whetstone is available you can certainly mend your weapon at a local weaponsmith's shop.