Hi JWH,
Though there is no explicit setting to have a specific number of detail lines on an OE specification, you can configure a spec to print the number of detail lines you want. It involves taking the height of the output (say 11" as the height of the piece of paper, less the non-printing area at the top and bottom margin), then subtract the section heights of the page header and footer. This will leave a specific area reserved for the detail section. If you divide this by the section height of the Detail section, that will give you the number of details that will print on the form. You would have to play a bit in determining the optimal section heights for the header, detail and footer sections. And this might change depending on the chosen printer driver (paper or PDF) so that might need to be tweaked at the client site.
For inserting vertical lines that extend all the way through the detail section, the correct way to place these is to insert the vertical line with the top positioned in the Page Header section. Then right-click on the line and choose the property Extend Thru Detail. This will print the line from header to footer, regardless of the number of details that exist on the transaction. So the line will print in the blank area between the last detail and the page footer.
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Regards,
Softrak Tech Support