How do I zoom in/out within the graph visualization of the browser?

Within the graph visualization pane of the browser (reached locally at http://localhost:7474), to zoom in/out of the graph display one first needs to select Full Screen mode. The zoom in/out controls are located in the bottom-right corner.

To enter Full Screen mode, within the graph visualization pane click the icon depicted in the example below:

To zoom in/out, click the icon depicted in the example below:

It would be helpful if you didn't have to be in Fullscreen mode. Can an enhancement be made for this? A zoom feature based on mouse scroll would be great!