Shape Elements

Lottie considers everything related to vector data as a "shape" but I think it's worth distinguishing across a few categories:

Shapes These provide only the shape information, but no styling
Style These provide styling info (like fill and stroke)
Group This is a shape that contains other shape
Modifier These change other shapes
Transform Special shape that defines the transforms in a group shape

Graphic Element

Element used to display vector data in a shape layer

Composition Diagram for Graphic Element

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer

The ty property defines the specific element type based on the following values:

`ty`	Type
`'el'`	Ellipse
`'fl'`	Fill
`'gf'`	Gradient
`'gs'`	Gradient Stroke
`'gr'`	Group
`'mm'`	Merge
`'no'`	No Style
`'op'`	Offset Path
`'sh'`	Path
`'sr'`	PolyStar
`'pb'`	Pucker Bloat
`'rc'`	Rectangle
`'rp'`	Repeater
`'rd'`	Rounded Corners
`'st'`	Stroke
`'tr'`	Transform Shape
`'tm'`	Trim Path
`'tw'`	Twist
`'zz'`	Zig Zag

Shapes

These shapes only define path data, to actually show something, they must be followed by some style shape.

They have a d attribute which specifies the drawing direction, which can be seen when using Trim Path.

Composition Diagram for Shape

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`d`	Shape Direction	Direction	Direction the shape is drawn as, mostly relevant when using trim path

Ellipse

Ellipse shape

Composition Diagram for Ellipse

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'el'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`d`	Shape Direction	Direction	Direction the shape is drawn as, mostly relevant when using trim path
`p`	Position	Position	Position
`s`	Vector	Size	Size

Example

Position x	256
Position y	256
Width	256
Height	256

Rectangle

A simple rectangle shape

Composition Diagram for Rectangle

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'rc'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`d`	Shape Direction	Direction	Direction the shape is drawn as, mostly relevant when using trim path
`p`	Position	Position	Center of the rectangle
`s`	Vector	Size	Size
`r`	Scalar	Rounded	Rounded corners radius

Example

Position x	256
Position y	256
Width	256
Height	256
Roundness	0

PolyStar

Star or regular polygon

Composition Diagram for PolyStar

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'sr'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`d`	Shape Direction	Direction	Direction the shape is drawn as, mostly relevant when using trim path
`p`	Position	Position	Position
`or`	Scalar	Outer Radius	Outer Radius
`os`	Scalar	Outer Roundness	Outer Roundness as a percentage
`r`	Scalar	Rotation	Rotation, clockwise in degrees
`pt`	Scalar	Points	Points
`sy`	Star Type	Star Type	Star Type
`ir`	Scalar	Inner Radius	Inner Radius
`is`	Scalar	Inner Roundness	Inner Roundness as a percentage

Example

Position x	256
Position y	256
Points	5
Rotation	0
Outer Radius	200
Inner Radius	100
Outer Roundness	0
Inner Roundness	0
Star Type

Path

Custom Bezier shape

Composition Diagram for Path

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'sh'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`d`	Shape Direction	Direction	Direction the shape is drawn as, mostly relevant when using trim path
`ks`	Bezier	Shape	Bezier path

Example

Shape 

Style

These apply a style (such as fill stroke) to the paths defined by the shapes.

Each style is applied to all preceding shapes in the same group / layer.

In most formats the style is usually defined as a property of a shape, in lottie they are separate and allows for more flexibility.

Some examples of the added flexibility would be a shape with multiple strokes, or a gradient fading into a solid color.

Composition Diagram for Shape Style

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`o`	Scalar	Opacity	Opacity, 100 means fully opaque

Fill

Solid fill color

Composition Diagram for Fill

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'fl'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`o`	Scalar	Opacity	Opacity, 100 means fully opaque
`c`	Color	Color	Color
`r`	Fill Rule	Fill Rule	Fill Rule

Example

Red	1
Green	0.98
Blue	0.28
Opacity	100
Fill Rule

Stroke

Solid stroke

Composition Diagram for Stroke

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'st'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`o`	Scalar	Opacity	Opacity, 100 means fully opaque
`lc`	Line Cap	Line Cap	Line Cap
`lj`	Line Join	Line Join	Line Join
`ml`	`number`	Miter Limit	Miter Limit
`ml2`	Scalar	Miter Limit	Animatable alternative to ml
`w`	Scalar	Width	Stroke width
`d`	`array` of Stroke Dash	Dashes	Dashed line definition
`c`	Color	Color	Stroke color

Example

Red	1
Green	0.98
Blue	0.28
Width	32
Opacity	100
Line Cap
Line Join
Miter Limit	3

Stroke Dashes

An item used to described the dash pattern in a stroked path

A stroke dash array consists of n dash entries, [n-1,n] gap entries and [0-1] offset entries.

Dash and gap entries MUST all be in a continuous order and alternate between dash and gap, starting with dash. If there are an odd number of dashes + gaps, the sequence will repeat with dashes and gaps reversed. For example a sequence of [4d, 8g, 16d] MUST be rendered as [4d, 8g, 16d, 4g, 8d, 16g].

Offset entry, if present, MUST be at the end of the array.

Composition Diagram for Stroke Dash

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`n`	Stroke Dash Type	Dash Type	Dash Type
`v`	Scalar	Length	Length of the dash

Example

Red	1
Green	0.98
Blue	0.28
Width	32
Opacity	100
Line Cap
Line Join
Miter Limit	3
Dash Offset	0
Dash Length	30
Dash Gap	50

Gradient Fill

Gradient fill color

Composition Diagram for Gradient

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'gf'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`o`	Scalar	Opacity	Opacity, 100 means fully opaque
`g`	Gradient	Colors	Gradient colors
`s`	Position	Start Point	Starting point for the gradient
`e`	Position	End Point	End point for the gradient
`t`	Gradient Type	Gradient Type	Type of the gradient
`h`	Scalar	Highlight Length	Highlight Length, as a percentage between `s` and `e`
`a`	Scalar	Highlight Angle	Highlight Angle in clockwise degrees, relative to the direction from `s` to `e`
`r`	Fill Rule	Fill Rule	Fill Rule

Example

Start X	256
Start Y	496
End X	256
End Y	16
Type
Highlight	0
Highlight Angle	0

Gradient Stroke

Gradient stroke

Composition Diagram for Gradient Stroke

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'gs'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`o`	Scalar	Opacity	Opacity, 100 means fully opaque
`lc`	Line Cap	Line Cap	Line Cap
`lj`	Line Join	Line Join	Line Join
`ml`	`number`	Miter Limit	Miter Limit
`ml2`	Scalar	Miter Limit	Animatable alternative to ml
`w`	Scalar	Width	Stroke width
`d`	`array` of Stroke Dash	Dashes	Dashed line definition
`g`	Gradient	Colors	Gradient colors
`s`	Position	Start Point	Starting point for the gradient
`e`	Position	End Point	End point for the gradient
`t`	Gradient Type	Gradient Type	Type of the gradient
`h`	Scalar	Highlight Length	Highlight Length, as a percentage between `s` and `e`
`a`	Scalar	Highlight Angle	Highlight Angle in clockwise degrees, relative to the direction from `s` to `e`

Example

Start X	256
Start Y	496
End X	256
End Y	16
Type
Highlight	0
Highlight Angle	0

No Style

Represents a style for shapes without fill or stroke.

Composition Diagram for No Style

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'no'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`o`	Scalar	Opacity	Opacity, 100 means fully opaque

Grouping

Group

A group is a shape that can contain other shapes (including other groups).

The usual contents of a group are:

Shapes
Style
Transform

For example, if you want to have a red rectangle with a black outline, its group will contain

A Rectangle defining the actual shape of the rectangle
A Fill for the color red
A Stroke for the black outline
A Transform for the group transform

While the contents may vary, a group must always end with a Transform shape.

The attributes of a Group are:

Composition Diagram for Group

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'gr'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`np`	`number`	Number Of Properties	Number Of Properties
`it`	`array` of Graphic Element	Shapes	Shapes
`cix`	`integer`	Property index	Index used in expressions

Transform

Basically the same as Transform but with the ty attribute.

Composition Diagram for Transform Shape

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'tr'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`a`	Position	Anchor Point	Anchor point: a position (relative to its parent) around which transformations are applied (ie: center for rotation / scale)
`p`	Splittable Position	Position	Position / Translation
`r`	Scalar	Rotation	Rotation in degrees, clockwise
`s`	Vector	Scale	Scale factor, `[100, 100]` for no scaling
`o`	Scalar	Opacity	Opacity
`sk`	Scalar	Skew	Skew amount as an angle in degrees
`sa`	Scalar	Skew Axis	Direction along which skew is applied, in degrees (`0` skews along the X axis, `90` along the Y axis)
`rx`	Scalar	X Rotation	Split rotation component
`ry`	Scalar	Y Rotation	Split rotation component
`rz`	Scalar	Z Rotation	Split rotation component, equivalent to `r` when not split
`or`	Vector	Orientation	Orientation

Transform shapes MUST always be present in the group and they MUST be the last item in the it array.

Modifiers

Modifiers process their siblings and alter the path defined by shapes.

Repeater

This is a bit different compared from other modifiers, since it will take into account style as well.

The effect of a Repeater is to duplicate the other shapes a number of times applying a transform for each copy.

Composition Diagram for Repeater

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'rp'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`c`	Scalar	Copies	Number of copies
`o`	Scalar	Offset	Offset
`m`	Composite	Composite	Stacking order
`tr`	Repeater Transform	Transform	Transform applied to each copy

The transform is multiplied by o + 1 (where o is the Offset property above).
So if o is 0, the first instance shown by the Repeater is at its starting location.
If it's 1, the first instance has the matrix applied to it. Other values multiply the initial transform accordingly.

Repeater Transform

Same as a regular Transform but instead of a single opacity value (o), it has two:

Composition Diagram for Repeater Transform

Attribute	Type	Title	Description
`a`	Position	Anchor Point	Anchor point: a position (relative to its parent) around which transformations are applied (ie: center for rotation / scale)
`p`	Splittable Position	Position	Position / Translation
`r`	Scalar	Rotation	Rotation in degrees, clockwise
`s`	Vector	Scale	Scale factor, `[100, 100]` for no scaling
`o`	Scalar	Opacity	Opacity
`sk`	Scalar	Skew	Skew amount as an angle in degrees
`sa`	Scalar	Skew Axis	Direction along which skew is applied, in degrees (`0` skews along the X axis, `90` along the Y axis)
`rx`	Scalar	X Rotation	Split rotation component
`ry`	Scalar	Y Rotation	Split rotation component
`rz`	Scalar	Z Rotation	Split rotation component, equivalent to `r` when not split
`or`	Vector	Orientation	Orientation
`so`	Scalar	Start Opacity	Opacity of the first repeated object.
`eo`	Scalar	End Opacity	Opacity of the last repeated object.

Attribute	Type	Description
`so`	Animated `number`	Start Opacity
`eo`	Animated `number`	End Opacity

The first copy will use so, the last eo, and copies between them will have an interpolated value.

Copies	4
Start Opacity	100
End Opacity	50
Position x	130
Position y	0
Rotation	137
Offset	0
Composite

Trim Path

This is mostly useful for shapes with a stroke and not a fill.

It takes the path defined by shapes and only shows a segment of the resulting bezier data.

Composition Diagram for Trim Path

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'tm'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`s`	Scalar	Start	Segment start
`e`	Scalar	End	Segment end
`o`	Scalar	Offset	Offset
`m`	Trim Multiple Shapes	Multiple	How to treat multiple copies

s and e go from 0 to 100, 0 being at the beginning of the path and 100 at the end. The displayed segment is what lays between the two.

o is an offset from the start, to allow values to wrap around. Its value goes from 0 (start of the path) to 360 (end of the path). It looks like an angle but it isn't really, the difference between o and s is that with o you can go over 360 or below 0 to shift the whole segment along the path.

Here is an interactive example:

Start	0
End	50
Offset	0
Multiple Shapes

Rounded Corners

Rounds corners of other shapes

Composition Diagram for Rounded Corners

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'rd'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`r`	Scalar	Radius	Radius

Radius 

Pucker / Bloat

Interpolates the shape with its center point and bezier tangents with the opposite direction

Composition Diagram for Pucker Bloat

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'pb'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`a`	Scalar	Amount	Amount as a percentage

When a is 0, nothing changes.
When a is positive, the vertices are pulled towards the center, with 100 being at the center. And the tangents are pushed away.
When a is negative the vertices are pushed away from the center with 100 being twice far away from the center. And the tangents are pulled towards the center.

The center is defined as the mean of the bezier vertices.

Amount 

Twist

Composition Diagram for Twist

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'tw'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`a`	Scalar	Angle	Angle
`c`	Vector	Center	Center

Merge

Boolean operator on shapes

Composition Diagram for Merge

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'mm'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`mm`	Merge Mode	Merge Mode	Merge Mode

Offset Path

Interpolates the shape with its center point and bezier tangents with the opposite direction

Composition Diagram for Offset Path

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'op'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`a`	Scalar	Amount	Amount
`lj`	Line Join	Line Join	Line Join
`ml`	Scalar	Miter Limit	Miter Limit

Zig Zag

Changes the edges of affected shapes into a series of peaks and valleys of uniform size

Composition Diagram for Zig Zag

Attribute	Type	Title	Description
`nm`	`string`	Name	Human readable name, as seen from editors and the like
`mn`	`string`	Match Name	Match name, used in expressions
`hd`	`boolean`	Hidden	Whether the shape is hidden
`ty`	`string` = `'zz'`	Shape Type	Shape Type
`bm`	Blend Mode	Blend Mode	Blend Mode
`ix`	`integer`	Property index	Index used in expressions
`cl`	`string`	CSS Class	CSS class used by the SVG renderer
`ln`	`string`	Layer XML ID	`id` attribute used by the SVG renderer
`r`	Scalar	Frequency	Number of ridges per segment
`s`	Scalar	Amplitude	Distance between peaks and troughs
`pt`	Scalar	Point Type	Point type (1 = corner, 2 = smooth)

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