1. To compose and send a mail message to another user:

   $ mail admin<Return>
   Subject: travel arrangements<Return>
   please book me a seat on the 8.00 a.m.<Return>
   BA shuttle to Heathrow.<Return>
   <Return>
   dave<Return>
   .<Return>
   $

The text that the user types is shown in bold.

<Return> is shown wherever the users presses the Return key.