Template string used for rendering the information that appear on hover box. Note that this will override `hoverinfo`. Variables are inserted using %{variable}, for example "y: %{y}". Numbers are formatted using d3-format's syntax %{variable:d3-format}, for example "Price: %{y:$.2f}". https://github.com/d3/d3-3.x-api-reference/blob/master/Formatting.md#d3_format for details on the formatting syntax. Dates are formatted using d3-time-format's syntax %{variable|d3-time-format}, for example "Day: %{2019-01-01|%A}". https://github.com/d3/d3-time-format#locale_format for details on the date formatting syntax. The variables available in `hovertemplate` are the ones emitted as event data described at this link https://plotly.com/javascript/plotlyjs-events/#event-data. Additionally, every attributes that can be specified per-point (the ones that are `arrayOk: true`) are available. variables `value` and `label`. Anything contained in tag `<extra>` is displayed in the secondary box, for example "<extra>{fullData.name}</extra>". To hide the secondary box completely, use an empty tag `<extra></extra>`.

Specifies the location of the `text`. *inside* positions `text` inside, next to the bar end (rotated and scaled if needed). *outside* positions `text` outside, next to the bar end (scaled if needed), unless there is another bar stacked on this one, then the text gets pushed inside. *auto* tries to position `text` inside the bar, but if the bar is too small and no bar is stacked on this one the text is moved outside.

Determines if texts are kept at center or start/end points in `textposition` *inside* mode.

Sets the angle of the tick labels with respect to the bar. For example, a `tickangle` of -90 draws the tick labels vertically. With *auto* the texts may automatically be rotated to fit with the maximum size in bars.

Sets the font used for `text` lying inside the bar.

Sets the font used for `text` lying outside the bar.

Constrain the size of text inside or outside a bar to be no larger than the bar itself.