Object Width +1 Pixel ⌥⇧→
Change the size of the selected object – make it one pixel wider.
In the days of retina displays and massive numbers of pixels it remains unclear about how useful this is. A 19 inch screen that is 1024×768 pixels has a pixel count of approximately 100 per inch. My Retina 5K iMac (5120×2880) is closer to 320 pixels per inch. My eyesight can’t distinguish a single pixel difference in dimension anymore.
Objects can be freely placed, which allows for flexibility, but can lead to overlaps or misalignments—particularly when pasting between layers. Fortunately, you can quickly clean up object positions.