Projection media described as "interactive" only.

Hi.

My first post, so bear with me. Thanks.

In the working draft for media types (http://www.w3.org/TR/CSS2/media.html), the "projection" media type is described as being in the "interactive" media group – whereas "screen" is described as both "static" and "interactive", and "print" is described as just "static". Is this a mistake in the spec? Surely "projection" media, is just "screen" but typically shown over a greater area with (potentially) less fine detail. The user can still interact or not interact with the source of the display exactly as if it were a regular "screen".

If this is not a mistake, I would appreciate an explanation of how this media type can be described as interactive only.

Thanks,

Antony