Zooming labels allow users to select their zoom area more precisely. To display them, make sure to set the visible attribute to true in the label object. The zooming labels display the selected area's node indexes and values, and you can style the background, borders, padding, and font. Refer to the Zooming, Scrollbar, and Preview Chart Tutorial for more information.

Attribute	Type	Description
backgroundColor background-color	String	Sets the background color of the object. Colors can be entered by name (e.g., "purple", "blue"), hexadecimal notation (e.g., "#666699", #33ccff"), or RGB notation (e.g., "rgb(255,0,0)", "rgb(0,0,255)") Default Value: null
borderAlpha border-alpha	Number	Sets the transparency level of the border on the object. Values must range between 0.0 and 1.0, with 0.0 being completely transparent and 1.0 being completely opaque. Note that values require the leading 0 before the decimal point. Default Value: 1 Introduced in: v2.1.1
borderColor border-color	String	Sets the border color of the object. Default Value: '#000'
borderWidth border-width	Number	Sets the border width of the object. Default Value: 0
centerRef center-ref	Boolean	Sets the (0,0) x/y coordinates as the center of the box (instead of the top-left corner). Default Value: false
class	String	Sets a class value on the object. Default Value: null
dataN data-n	Any	Prefix attribute or array using "data-" to define a custom token.
fontAngle font-angle	Number	Sets the text's angle. A positive value will rotate the object by that number of degrees clockwise, while a negative value.
fontColor font-color	String	Sets the font color of the text.
fontFamily font-family	String	Sets the text's font family.
fontSize font-size	Number	Sets the text's font size.
fontStyle font-style	String	Sets the text's font style. Accepted Values: ['normal', 'italic', 'oblique', 'none']
fontWeight font-weight	Number, String	Sets the text's font weight. Similar to bold. Accepted Values: ['bold', 'none', 'normal', `${string}`] Default Value: 'normal'
id	String	Sets the id of the object. Default Value: ''
lineHeight line-height	Number	Sets the height of a line box. Default Value: -1
mediaRules media-rules	Array.<Object>	Configure media rules.
overlap	Boolean	Sets whether the object allows overlapping with other labels. If false, and two objects overlap, only one will be displayed. Default Value: true
padding	Number	Sets the object's padding around the text. Up to four values can be entered to set the padding for all four sides, with the first value affecting the top padding, the second value affecting the right padding, and so on, in a clockwise direction. Default Value: null
paddingBottom padding-bottom	Number	Sets the object's bottom padding around the text. Default Value: 2
paddingLeft padding-left	Number	Sets the object's left padding around the text. Default Value: 2
paddingRight padding-right	Number	Sets the object's right padding around the text. Default Value: 2
paddingTop padding-top	Number	Sets the object's top padding around the text. Default Value: 2
rectShortcut rect-shortcut	Boolean	Used to force the library to create rectangles using a faster drawing API (instead of painting them like a closed polygon). However, using this would disable effects like rounded borders. It is a performance setting for edge cases. Default Value: false
visible	Boolean	Sets the visibility of the object. Allows you to turn off the object without removing lines of JSON. Default Value: true
zIndex z-index	Number	Sets the z position of the object. Objects with higher z indexes will appear "above" those with lower z index values. Default Value: 1