docs: public void removeLine (final Line aLine)
    {
      if (aLine.m_aPrevious == null)
        m_aLines = aLine.m_aNext;
      else
        aLine.m_aPrevious.m_aNext = aLine.m_aNext;
      if (aLine.m_aNext == null)
        m_aLineTail = aLine.m_aPrevious;
      else
        aLine.m_aNext.m_aPrevious = aLine.m_aPrevious;
      aLine.m_aPrevious = null;
      aLine.m_aNext = null;
    }