S_INS_DEL_CHAR
__m_screen->_flags &= ~S_INS_DEL_CHAR;
__m_screen->_flags |= S_INS_DEL_CHAR;
__m_screen->_flags &= ~S_INS_DEL_CHAR;
__m_screen->_flags |= S_INS_DEL_CHAR;
if ((__m_screen->_flags & S_INS_DEL_CHAR) &&
__m_screen->_flags |= S_INS_DEL_CHAR;