Add pixels to element dimensions and location

I find myself often having to move an element or a group of elements a certain number of pixels, and it’s very important to get it precise because of collapsing etc.

It would make it a lot easier if I could ADD pixels to the existing value, instead of actually setting the value. So for example, if I need to move a group of elements 500 pixels down, then I can type in +500 in the Y box multi-element property window, like the example below:



Was about to submit the same request. I would like the dimensions boxes to accept simple operators such as 1167-20. This way I don’t need to use a calculator when trying to align things. I could just copy the distance between elements (provided by the editor) and add it or subtract it directly in the Appearance panel.