Missing Docs for MOVE direction?

Howdy,

I was just looking at the documentation for cursors command, and  
noticed that the MOVE command's "direction" argument doesn't seem to  
have documentation for its possible values.
    http://www.postgresql.org/docs/8.4/static/sql-move.html

I assume that they should be FORWARD and BACKWARD, as the former is  
used in the example, but in truth I have no idea.

Also, what's the difference between the FROM and IN clauses? Or are  
they they same thing?

Thanks,

David