\begin{longtable}{p{1.5cm}p{12cm}} \hline \multicolumn{1}{c}{{\textbf{Section} \texttt{pdf}}} & \multicolumn{1}{c}{{\textbf{Description}}} \\ \hline \texttt{pdlabel} & This specifies the parton distributions used in the case when the code has been built with \texttt{PDFROUTINES = NATIVE}. The choice of parton distribution is made by inserting the appropriate 7-character code from Table~\ref{pdlabelrecent} or in Tables~\ref{pdlabelmrs} and~\ref{pdlabelcteq} for historical PDF sets. As mentioned above, this also sets the value of $\alpha_S(M_Z)$.\\ \hline \end{longtable}