Sets the opacity of the annotation (text + arrow).

Sets the vertical alignment of the `text` within the box. Has an effect only if an explicit height is set to override the text height.

Sets the background color of the annotation.

Sets the color of the border enclosing the annotation `text`.

Sets the padding (in px) between the `text` and the enclosing border.

Sets the width (in px) of the border enclosing the annotation `text`.

Determines whether or not the annotation is drawn with an arrow. If *true*, `text` is placed near the arrow's tail. If *false*, `text` lines up with the `x` and `y` provided.

Sets the end annotation arrow head style.

Sets the start annotation arrow head style.

Sets the annotation arrow head position.

Sets the size of the end annotation arrow head, relative to `arrowwidth`. A value of 1 (default) gives a head about 3x as wide as the line.

Sets the size of the start annotation arrow head, relative to `arrowwidth`. A value of 1 (default) gives a head about 3x as wide as the line.

Sets the width (in px) of annotation arrow line.

Sets a distance, in pixels, to move the end arrowhead away from the position it is pointing at, for example to point at the edge of a marker independent of zoom. Note that this shortens the arrow from the `ax` / `ay` vector, in contrast to `xshift` / `yshift` which moves everything by this amount.

Sets a distance, in pixels, to move the start arrowhead away from the position it is pointing at, for example to point at the edge of a marker independent of zoom. Note that this shortens the arrow from the `ax` / `ay` vector, in contrast to `xshift` / `yshift` which moves everything by this amount.

Sets text to appear when hovering over this annotation. If omitted or blank, no hover label will appear.

Sets the background color of the hover label. By default uses the annotation's `bgcolor` made opaque, or white if it was transparent.

Sets the border color of the hover label. By default uses either dark grey or white, for maximum contrast with `hoverlabel.bgcolor`.