      <dd>Indicates the end of the text (the character just after the last newline).</dd>
    
      <dt>mark</dt>
    
      <dd>Indicates the character just after the mark whose name is <code>mark</code>.</dd>
    
      <dt>(tag . first)</dt>
    
      <dd>Indicates the first character in the text that has been tagged with tag. This form generates an error if no characters are currently tagged with tag.</dd>
    
      <dt>(tag . last)</dt>
    
      <dd>Indicates the character just after the last one 