mouse wheel zooming

Could this tool support mouse-wheel zooming , e.g. where using the mouse wheel zooms in at the point of the cursor (keeping that point fixed). This is an image navigation technique that can substitute for scrolling aswell, whilst keeping your hand on the mouse and your eyes focussed on the target area

No files, tests, or entry points are named in the issue. Start by locating the image navigation and existing zoom or scroll handling in the JavaScript source, then run any related tests or manual UI checks available; done means the mouse wheel zooms around the cursor while keeping that image point fixed.

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