For those of us older folks who know where that came from, we also might remember using the “nudge” feature in Windows products.
Snap to grid works…“okay” in Carbide Create, but getting an absolute fit gives me fits. In Windows, all you needed to do was select an object (a picture, textbox or whatever) and hold down the [Ctrl] key and hit the cursor keys. The object would shift by .183" IIRC. By holding down the [Alt] and hitting the cursor keys, the object would move by single pixels. Very precise! If you have OpenOffice Suite you can use [Alt] cursor when you import a picture into a document and try it yourself. Once you use it, you’re hooked.