Since at least Windows 8, the group boxes appear in a very light grey colour on top of a slightly different shade of grey, which makes it almost impossible to see the contour of the boxes. The vertical and horizontal lines, on the other hand, are more visible. In fact, WordPerfect at some point replaced the group boxes in its dialogs with such lines; see Format > Typesetting > Advance... (Horizontal position and Vertical position), where lines are added after the text strings. Reproducing this formatting is very difficult to achieve precisely with the Dialog Editor.See a substantial discussion, with images, on WordPerfect Universe as [X7 does not show frames around group boxes](https://www.wpuniverse.com/vb/showthread.php?37266).
