One of the boxes was called the M.C. It was built into the wall over the 
counter. Nell dragged a chair and climbed up to watch as Harv worked at it. The 
front of the M.C. was a mediatron, which meant anything that had pictures 
moving around on it, or sound coming out of it, or both. As Harv poked it with 
his fingers and spoke to it, little moving pictures danced around. It reminded 
her of the ractives she played on the big mediatron in the living room, when it 
wasn't being used by someone bigger.