+ /* Draw all the vertical lines in our running example, other
+ than the far left and far right ones. Only the ones that
+ start in the last row of the heading are drawn with the
+ "category" style, the rest with the "dimension" style,
+ e.g. only the # below are category style:
+
+ +-----------------------------------------------------+
+ | bbbb |
+ +-----------------+-----------------+-----------------+
+ | bbbb1 | bbbb2 | bbbb3 |
+ +-----------------+-----------------+-----------------+
+ | aaaa | aaaa | aaaa |
+ +-----+-----+-----+-----+-----+-----+-----+-----+-----+
+ |aaaa1#aaaa2#aaaa3|aaaa1#aaaa2#aaaa3|aaaa1#aaaa2#aaaa3|
+ +-----+-----+-----+-----+-----+-----+-----+-----+-----+
+ */
+ enum pivot_border style
+ = (y1 == b_size - 1 ? cat_col_vert : dim_col_vert);
+ if (!vrules[x2])