Page.return "Send an email"
  `<form action=mail.sml method=post>
    <table>
    <tr><th align=left>To:</th><td align=right>
      <input type=text name=to></td></tr>
    <tr><th align=left>From:</th><td align=right>
      <input type=text name=from></td></tr>
    <tr><th align=left>Subject:</th><td align=right>
      <input type=text name=subject></td></tr>
    <tr><td colspan=2><textarea name=body cols=40 
      rows=10>Fill in...</textarea></td></tr>
    <tr><td colspan=2 align=center>
      <input type=submit value="Send Email"></td></tr>  
    </table>
   </form>`