Shift (Item command)
Certain weapons are so-called "bastard", or one-and-a-half handed
ones. This means they can be wielded either with one or with both hands.
By default you will wield them single-handed, but if you wish to hit
harder (and who wouldn't!), you can shift to a two-handed grip.
This command will shift your grip back and forth, if you want to go
to a specific grip only, you can instead type "single wield" or "double