Poison Maps includes two unique (and patent pending) gestures to help zoom or pan around a large document on a smaller touchscreen. We call these gestures "Context Zoom" and "Context Pan", although they are arguably the same gesture but with two separate uses.

On devices with 3D Touch functionality, the force of the touch can be used to control how far you zoom out. This is more immediate than a long touch, and also allows the zoom factor to be controlled at any time, even after the pan has started.

These gestures are not designed to replace the traditional "pinching" type gestures but instead to complement them. In some situations the traditional approach is still best, but in other situations these new gestures are more suitable:

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