\item The Writer must be able to write at least fifty characters per line.
\item The Writer must be able to write at least three lines of text.
\item The Writer must plot characters with a size that is readable from 4 meters for a person with good eyesight.
\item The Writer must plot in a regular used font with corresponding character spacing.
\item When a new tweet is send to the Writer, the Writer must wipe the existing tweet and write down the new tweet.
\item If the Writer is not wiping or writing then the Writer must not obstruct the view of the whiteboard.
\item While writing, the Writer must have a writing speed of at least one character per second.
\item The dynamics of the Writer must be complex/sophisticated/interesting.
