   <dd>Returns the index in <tt>text</tt> where the next line would start
      off, after the text that would be displayed in <tt>DrawText()</tt>.
      Where <tt>GetLines()</tt> would give you some text to work with,
      <tt>copytext(text, GetCutoffIndex(...))</tt> could pick up where
      <tt>GetLines()</tt> left off.</dd>

  <dt>proc/GetLine(text, index=1)</dt>
    <dd>Get a complete line of text starting at <tt>index</tt> and ending at
      either the end of the string or the first <tt>\n</tt> foun