                             <option value="bytefield">Bytefield</option>
                                <option value="seqdiag">SeqDiag</option>
                                <option value="actdiag">ActDiag</option>
                                <option value="nwdiag">NwDiag</option>
                                <option value="packetdiag">PacketDiag</option>
                                <option value="rackdiag">RackDiag</option>
                                <option value="c4plantuml">C4 with 