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While many of the elements that can be added to a canvas will have different attributes, they will all share the following attributes.
width
Initial width of the widget in pixels.
height
Initial height of the widget in pixels.
left
Initial left position of the widget in pixels.
Top
Initial top position of the widget in pixels.
name
Name of the widget, this can be used as an identifier to easily select the widget from the DOM.
widgetUUID
Unique ID for the widget. This should not be used for selecting items from the canvas.
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