Desktop-Mobile layout change Framework

Looking for a Toolset/Framework of ~5+ different concepts about how content placement should be changed between desktop and mobile displays.

It was called something like: "The 5R's of X", which specified these concepts, all starting on the letter R.

• Reorder: "Desktop show's the content as [A, B], in mobile show as [B, A] because reasons."
• Rearrange: ...?
• Reflow?: ...?

I've googled to no avail, anyone recognise something like this?