Does SpellShield shield against Word of Command

[Helborn]

I tried doing several searches and found nothing. Sorry if this is answered elsewhere. I was preparing for Tollenkar's Lair and this struck me.
ITL 27: Spell Shield (T): Prevents any spells (hostile or otherwise) from being cast on its subject – that is, protects against effects of all Special, Missile, and Thrown spells, and the occult damage from a staff. Does not affect spells already cast; does not protect against ordinary physical force, including damage done by created beings or things, damage done by weapons (ordinary or magical), or the effects of magic ropes and slippery floors. When a spell hits a figure protected by Spell Shield, the wizard casting the spell loses the entire ST cost for that spell, because it succeeded but was nullified.


This seems to imply that a spoken Word of Command would be nullified. Not sure about a written one?