A question came up on our forums regarding how one might prototype map zoom in Indigo Studio. The suggestion was to leverage SVG (which is not currently supported in Indigo, but you can vote for it...

Although we had a date picker in an early alpha of Indigo, it had to be cut for V1 release. We do know it is a common/useful control, so it will make its way back into the toolbox. To expedite that...