diff --git a/API.md b/API.md
index 7baa931e..e6b9e8d2 100644
--- a/API.md
+++ b/API.md
@@ -1380,18 +1380,19 @@ Pan and zoom SVG, HTML or Canvas using mouse or touch input.
 * [d3.zoom](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom) - create a zoom behavior.
 * [*zoom*](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#_zoom) - apply the zoom behavior to the selected elements.
 * [*zoom*.transform](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_transform) - change the transform for the selected elements.
-* [*zoom*.translateTo](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_translateTo) - translate the transform for the selected elements.
 * [*zoom*.translateBy](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_translateBy) - translate the transform for the selected elements.
+* [*zoom*.translateTo](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_translateTo) - translate the transform for the selected elements.
 * [*zoom*.scaleBy](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_scaleBy) - scale the transform for the selected elements.
 * [*zoom*.scaleTo](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_scaleTo) - scale the transform for the selected elements.
+* [*zoom*.constrain](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_constrain) - override the transform constraint logic.
 * [*zoom*.filter](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_filter) - control which input events initiate zooming.
 * [*zoom*.touchable](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_touchable) - set the touch support detector.
 * [*zoom*.wheelDelta](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_wheelDelta) - override scaling for wheel events.
-* [*zoom*.clickDistance](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_clickDistance) - set the click distance threshold.
 * [*zoom*.extent](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_extent) - set the extent of the viewport.
 * [*zoom*.scaleExtent](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_scaleExtent) - set the allowed scale range.
 * [*zoom*.translateExtent](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_translateExtent) - set the extent of the zoomable world.
-* [*zoom*.constrain](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_constrain) - override the transform constraint logic.
+* [*zoom*.clickDistance](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_clickDistance) - set the click distance threshold.
+* [*zoom*.tapDistance](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_tapDistance) - xxxxxxxxx
 * [*zoom*.duration](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_duration) - set the duration of zoom transitions.
 * [*zoom*.interpolate](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_interpolate) - control the interpolation of zoom transitions.
 * [*zoom*.on](https://github.com/d3/d3-zoom/blob/v2.0.0/README.md#zoom_on) - listen for zoom events.