Grids are of course a common and valuable device for visual designers; much has been written about “the grid” from the standpoint of design criticism, theory, and history. However, it’s also important to develop a sensitivity to see the “invisible gridlines” lying behind the composition of UI controls in a dialog box, for instance…and minimize the number of intersecting lines. That’s actually how one can achieve a cleaner layout and design, with greater alignment of objects at the most tedious level of detail: x-heights, widths, outside borders, etc. It’s focus on that level of detail that can help distinguish one’s design as truly perfected, rather than merely sufficient.