%% LaTeX2e file `ltx1.tex' %% generated by the `filecontents' environment %% from source `ltxtable' on 2021/06/13. %% \begin{longtable}{|cXX|} the & head& line\endhead the & foot& line\endfoot a&b&b\\ \multicolumn{2}{c}{xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx}&c\\ a&b&b b b b b b b b b b b b b b b b b b b b b b b b b b \\ a a& b b& c c\\ a a& b b& c c c c c c c c c c c c c c c c c c c c c c c c c c c c c cc cc\\ a a aaaa& b b& c ccccc\\ \end{longtable}