I've attached an image with the row that you want to provide the esp touch IoAbstraction in.

Let me know how it goes once you've got the versions I suggested. It should be quite natural in terms of direction movements for both value adjustment and scrolling.

Also, did you try the new packaged Linux version? It has another upgrade coming very soon that gives it the same functionality as the Windows and Mac one: proper copy and paste, support for undoing bulk removals. With those changes, it is close to feature complete.

We've been testing it fully on a couple of new Ubuntu VMs we've created.