The back object allows customizing the back button, which appears when navigating through a nav chart. Click on the "Others" slice to drilldown into the slice.

Attribute	Type	Description
align	String	Sets the alignment of the object. Accepted Values: ['left', 'center', 'right']
alpha	Number	Sets the opacity on the marker, with 0 being fully transparent and 1 being fully opaque. Note that decimal value requires the leading 0.
anchor	String	Allows you to set an object's anchor position Accepted Values: ['tl', 'tr', 'bl', 'br', 'c', 't', 'r', 'b', 'l'] Default Value: 'tl'
angle	Number	Sets the rotation angle of the object. Default Value: 0
backgroundClip background-clip	Boolean	Clips the background image to the margins of the shape/box. Default Value: true
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
backgroundColor1 background-color-1	String	Sets the first color of a 2 color background gradient of the object. To be used with background-color-2. Default Value: null
backgroundColor2 background-color-2	String	Sets the second color of a 2 color background gradient of the object. To be used with background-color-1. Default Value: null
backgroundFit background-fit	String	Sets the direction/s on which the background image is being "stretched". Default Value: ''
backgroundImage background-image	String	Sets a background image for the object. Value can be a local file or a web image's location. For patterns, the available patterns are: [`${string}`, 'PATTERN_BACKWARD_DIAGONAL', 'PATTERN_DARK_DOWNWARD_DIAGONAL', 'PATTERN_DARK_HORIZONTAL', 'PATTERN_DARK_UPWARD_DIAGONAL', 'PATTERN_DARK_VERTICAL', 'PATTERN_DASHED_DOWNWARD_DIAGONAL', 'PATTERN_DASHED_HORIZONTAL', 'PATTERN_DASHED_UPWARD_DIAGONAL', 'PATTERN_DASHED_VERTICAL', 'PATTERN_DIAGONAL_BRICK', 'PATTERN_DIAGONAL_CROSS', 'PATTERN_DIVOT', 'PATTERN_DOTTED_DIAMOND', 'PATTERN_DOTTED_GRID', 'PATTERN_FORWARD_DIAGONAL', 'PATTERN_HORIZONTAL', 'PATTERN_HORIZONTAL_BRICK', 'PATTERN_LARGE_CHECKER_BOARD', 'PATTERN_LARGE_GRID', 'PATTERN_LIGHT_DOWNWARD_DIAGONAL', 'PATTERN_LIGHT_HORIZONTAL', 'PATTERN_LIGHT_UPWARD_DIAGONAL', 'PATTERN_LIGHT_VERTICAL', 'PATTERN_NARROW_HORIZONTAL', 'PATTERN_NARROW_VERTICAL', 'PATTERN_OUTLINED_DIAMOND', 'PATTERN_PLAID', 'PATTERN_SHADE_25', 'PATTERN_SHADE_50', 'PATTERN_SHADE_75', 'PATTERN_SHINGLE', 'PATTERN_SMALL_CHECKER_BOARD', 'PATTERN_SMALL_GRID', 'PATTERN_SOLID_DIAMOND', 'PATTERN_SPHERE', 'PATTERN_TRELLIS', 'PATTERN_VERTICAL', 'PATTERN_WAVE', 'PATTERN_WEAVE', 'PATTERN_WIDE_DOWNWARD_DIAGONAL', 'PATTERN_WIDE_UPWARD_DIAGONAL', 'PATTERN_ZIGZAG']. Accepted Values: ['PATTERN_BACKWARD_DIAGONAL', 'PATTERN_DARK_DOWNWARD_DIAGONAL', 'PATTERN_DARK_HORIZONTAL', 'PATTERN_DARK_UPWARD_DIAGONAL', 'PATTERN_DARK_VERTICAL', 'PATTERN_DASHED_DOWNWARD_DIAGONAL', 'PATTERN_DASHED_HORIZONTAL', 'PATTERN_DASHED_UPWARD_DIAGONAL', 'PATTERN_DASHED_VERTICAL', 'PATTERN_DIAGONAL_BRICK', 'PATTERN_DIAGONAL_CROSS', 'PATTERN_DIVOT', 'PATTERN_DOTTED_DIAMOND', 'PATTERN_DOTTED_GRID', 'PATTERN_FORWARD_DIAGONAL', 'PATTERN_HORIZONTAL', 'PATTERN_HORIZONTAL_BRICK', 'PATTERN_LARGE_CHECKER_BOARD', 'PATTERN_LARGE_GRID', 'PATTERN_LIGHT_DOWNWARD_DIAGONAL', 'PATTERN_LIGHT_HORIZONTAL', 'PATTERN_LIGHT_UPWARD_DIAGONAL', 'PATTERN_LIGHT_VERTICAL', 'PATTERN_NARROW_HORIZONTAL', 'PATTERN_NARROW_VERTICAL', 'PATTERN_OUTLINED_DIAMOND', 'PATTERN_PLAID', 'PATTERN_SHADE_25', 'PATTERN_SHADE_50', 'PATTERN_SHADE_75', 'PATTERN_SHINGLE', 'PATTERN_SMALL_CHECKER_BOARD', 'PATTERN_SMALL_GRID', 'PATTERN_SOLID_DIAMOND', 'PATTERN_SPHERE', 'PATTERN_TRELLIS', 'PATTERN_VERTICAL', 'PATTERN_WAVE', 'PATTERN_WEAVE', 'PATTERN_WIDE_DOWNWARD_DIAGONAL', 'PATTERN_WIDE_UPWARD_DIAGONAL', 'PATTERN_ZIGZAG', `${string}`] Default Value: ''
backgroundPosition background-position	String	Sets the position of the background when the background-repeat value is no-repeat. Default Value: '50% 50%'
backgroundRepeat background-repeat	Boolean, String	Sets the repeating mode for the background image. Default Value: 'repeat'
backgroundScale background-scale	Number	Scales the background image using the specified ratio. Default Value: 1
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
borderBottom border-bottom	Number	Sets the object's bottom border style. Accepts solid, dashed, and dotted styles. Default Value: ''
borderColor border-color	String	Sets the border color of the object. Default Value: '#000'
borderLeft border-left	Number	Sets the object's left border style. Accepts solid, dashed, and dotted styles.
borderRadius border-radius	Number	Sets the object's border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A single value will affect all 4 corners; multiple values will have separate effects on each corner, with the first value affecting the top-left corner, the second value affecting the top-right corner, and so on, in a clockwise direction. A negative value will cut a corner off without rounding. Default Value: 0
borderRadiusBottomLeft border-radius-bottom-left	Number	Sets the object's bottom-left border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A negative value will cut a corner off without rounding. Default Value: 0
borderRadiusBottomRight border-radius-bottom-right	Number	Sets the object's bottom-right border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A negative value will cut a corner off without rounding. Default Value: 0
borderRadiusTopLeft border-radius-top-left	Number	Sets the object's top-left border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A negative value will cut a corner off without rounding. Default Value: 0
borderRadiusTopRight border-radius-top-right	Number	Sets the object's top-right border radius for rounded corners. Larger values create rounder corners, while smaller values create sharper corners. A negative value will cut a corner off without rounding. Default Value: 0
borderRight border-right	Number	Sets the object's right border style. Accepts solid, dashed, and dotted styles. Default Value: ''
borderTop border-top	Number	Sets the object's top border style. Accepts solid, dashed, and dotted styles. Default Value: ''
borderWidth border-width	Number	Sets the border width of the object. Default Value: 0
bottomState bottom-state	Object	Sets the style for a copy of the object which is placed below the object itself. Introduced in: v1.14.0
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
clipText clip-text	Boolean	Truncates text based on the setting of width. Default Value: false
color	String	Sets the object's font color. Similar to font-color. Default Value: '#000'
cursor	String	Sets the cursor type when hovering over the object. Accepted Values: ['alias', 'all-scroll', 'arrow', 'auto', 'cell', 'col-resize', 'context-menu', 'copy', 'crosshair', 'default', 'e-resize', 'ew-resize', 'hand', 'help', 'move', 'n-resize', 'ne-resize', 'nesw-resize', 'no-drop', 'none', 'not-allowed', 'ns-resize', 'nw-resize', 'nwse-resize', 'pointer', 'progress', 'row-resize', 's-resize', 'se-resize', 'sw-resize', 'text', 'vertical-text', 'w-resize', 'wait'] Default Value: 'auto' Introduced in: v1.9.0
dataN data-n	Any	Prefix attribute or array using "data-" to define a custom token.
fillAngle fill-angle	Number	Sets the angle of the axis along which the linear gradient is drawn. Default Value: 90
fillOffsetX fill-offset-x	Number	Sets an X offset to apply to the fill. Default Value: 0
fillOffsetY fill-offset-y	Number	Sets a Y offset to apply to the fill. Default Value: 0
fillType fill-type	String	Sets the background gradient fill type to either linear or radial. Accepted Values: ['linear', 'none', 'radial'] Default Value: 'linear'
flat	Boolean	Set to true disables the chart interactivity. Default Value: false
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'
gradientColors gradient-colors	String	Sets a set of colors for a complex background gradient consisting of 2 or more colors. To be used with gradient-stops. Default Value: ''
gradientStops gradient-stops	String	Sets the gradient stops for a complex background gradient consisting of 2 or more colors. To be used with gradient-colors. Default Value: ''
height	Number	Sets the object's height.
hoverState hover-state	Object	Sets the hover state styles of the object. Default Value: null
id	String	Sets the id of the object. Default Value: ''
italic	Boolean	Sets whether the text is displayed with italicized characters or not. Default Value: false
lineHeight line-height	Number	Sets the height of a line box. Default Value: -1
maxChars max-chars	Number	Sets the maximum numbers of characters displayed in the object. The value determines how many characters will be displayed before the text is cut and appended with "..." Default Value: 0
maxWidth max-width	Number	Sets a maximum width of the object.
mediaRules media-rules	Array.<Object>	Configure media rules.
offsetX offset-x	Number	Sets an x-offset to apply when positioning the object. Default Value: 0
offsetY offset-y	Number	Sets an y-offset to apply when positioning the object. Default Value: 0
position	String	Sets the object's position relative to its container. Similar results can be obtained by setting [margin] and [margin-...] attributes. Uses x,y coordinates originating from the top left of the chart. Default Value: ''
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
rtl	Boolean	Renders text right-to-left. Default value is false. Default Value: false
shadow	Boolean	Sets whether the object's shadow is visible or not. Has limited effect on HTML5 implementation. Default Value: false
shadowAlpha shadow-alpha	Number	Sets the transparency of the shadow of the object. The higher the value, the less transparent the shadow will be. Default Value: 0.75
shadowAngle shadow-angle	Number	Sets the angle of the shadow underneath the object. Default Value: 45
shadowBlur shadow-blur	Number	Sets the blur effect size for the shadow of the object. Has limited effect on HTML5 implementation. Default Value: 0
shadowColor shadow-color	String	Sets the color of the shadow of the object. Default Value: '#999'
shadowDistance shadow-distance	Number	Sets the distance between the shadow and the object. Default Value: 2
text	String	Sets the text content of the object. Default Value: null
textAlign text-align	String	Sets the alignment of the object. Accepted Values: ['center', 'bottom', 'left', 'middle', 'right'] Default Value: 'center'
textAlpha text-alpha	Number	Sets the opacity on the text, with 0 being fully transparent and 1 being fully opaque. Note that decimal value requires the leading 0. Default Value: true
textDecoration text-decoration	String	Sets the text's decoration to use underlined characters. Similar to underline. May not display properly in Mozilla Firefox when charts are rendered using SVG. Default Value: 'none'
tooltip	Object	Configures the tooltip element, which appears when hovering over an object.
topState top-state	Object	Sets the style for a copy of the object which is placed above the object itself. Introduced in: v1.14.0
underline	Boolean	Sets whether the text is displayed with underlined characters or not. Default Value: false
verticalAlign vertical-align	String	Sets vertical alignment of the object. Accepted Values: ['top', 'middle', 'bottom'] Default Value: 'middle'
visible	Boolean	Sets the visibility of the object. Allows you to turn off the object without removing lines of JSON. Default Value: true
width	Number	Sets the object's width.
wrapText wrap-text	Boolean	Sets whether the text will wrap, depending on the width of the object. Default Value: false
x	Number	Sets the X position of the object. Default Value: -1
y	Number	Sets the Y position of the object.
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