My question is similar to all those postings re vertical lines in detail section. I have that, & it is neatly handled by the previous replies. My problem is that the detail section remains a constant size (which suits me) but I don't know why that is so. the detail section is narrow, with 'can grow' set to 'yes', but regardless of the no. of details printed, incl the last page, the footer section is always at same place near bottom of page, & all my attempts to get the vert lines to fill in the gap between last detail & start of footer have left me disappointed.
I seem to remember something about using a template or picture as a background to get vertical lines, but I don't remember the details since I did not need it at the time. Another solution is to print onto a pre-printed form.