/** XLine is the base class for ban lines such as G-lines and K-lines.
* Modules may derive from this, and their xlines will automatically be
* handled as expected by any protocol modules (e.g. m_spanningtree will
/** XLine is the base class for ban lines such as G-lines and K-lines.
* Modules may derive from this, and their xlines will automatically be
* handled as expected by any protocol modules (e.g. m_spanningtree will