Revealing thin line directly on the screen

first sorry for my english. THIS PROBLEM KEEP PREVENTING ME FORM MIGRATE TO LIB-O. i need to see if my work is correct in creating cell border, in excel 2003 the thin line drawn as very dense little dots that makes that telling me its thinner than the standard one, but in lib office calc i have to see it in preview mode because the standard thick line is same as the thinner (in monitor). imagine if i had 100 pages and have to check it to preview mode, close the preview, make some correction, back to preview to see the result, and go on. thanx.

Hi dimmerpixel, maybe using a higher scale view can help. (Bottom-right)