\subsubsection{The \moc{mccgt} dependent records on a \moc{GROUP} directory}\label{sect:mccggrpdiringdir} If the characteristic method (MCCG) is used, the following records will also be found on the \moc{GROUP} directory: \begin{DescriptionEnregistrement}{MCCG groupwise directories}{7.0cm} % ACA \OptRealEnr {DIAGF\$MCCG\blank{2}}{$N_{\rm dim}$}{$\mathcal{S}^{t}_{22}>0$}{} {Diagonal elements of the ACA flux matrix.} \OptRealEnr {CF\$MCCG\blank{5}}{$\mathcal{S}^{t}_{26}$}{$\mathcal{S}^{t}_{22}>0$}{} {Non-Diagonal elements of the ACA flux matrix.} \OptRealEnr {ILUDF\$MCCG\blank{2}}{$N_{\rm dim}$}{$\left\{\hskip -2mm\begin{tabular}{l} $\mathcal{S}^t_{22} > 0$ \\ $\mathcal{S}^t_{23} \ge 2$ \end{tabular}\right.$}{} {Inverse diagonal elements of U from ILU0 decomposition of ACA flux matrix} \OptRealEnr {ILUCF\$MCCG\blank{2}}{$\mathcal{S}^{t}_{37}$}{$\left\{\hskip -2mm\begin{tabular}{l} $\mathcal{S}^t_{22} > 0$ \\ $\mathcal{S}^t_{23}\in \{2,3\}$ \end{tabular}\right.$}{} {Non-diagonal elements of U from ILU0 decomposition of ACA flux matrix that differ from CF} \OptRealEnr {DIAGQ\$MCCG\blank{2}}{$N_{\rm dim}$}{$\mathcal{S}^{t}_{22}>0$}{} {Diagonal elements of the ACA source matrix.} \OptRealEnr {CQ\$MCCG\blank{5}}{$\mathcal{S}^{t}_{26}$}{$\mathcal{S}^{t}_{22}>0$}{} {Non-diagonal elements of the ACA source matrix.} % SCR/STIS \OptRealEnr {PJJ\$MCCG\blank{4}}{$\mathcal{S}^{t}_{1}\mathcal{S}^{t}_{36}$}{$\mathcal{S}^{t}_{35}=1$}{} {Mode-to-mode self-collision probabilities for SCR or ``STIS=1'' integration strategy.} \OptRealEnr {PSJ\$MCCG\blank{4}}{$\mathcal{S}^{t}_{22}$}{$\mathcal{S}^{t}_{21}>0$}{} {Surface-to-volume probabilities for SCR.} \end{DescriptionEnregistrement} \eject