#' @section Properties:
#'
#' You can set the following mark properties:
#'
#' \itemize{
#' \item x The first (typically left-most) x-coordinate.
#' \item x2 The second (typically right-most) x-coordinate.
#' \item width The width of the mark (if supported).
#' \item y The first (typically top-most) y-coordinate.
#' \item y2 The second (typically bottom-most) y-coordinate.
#' \item height The height of the mark (if supported).
#' \item opacity The overall opacity.
#' \item fill The fill color.
#' \item fillOpacity The fill opacity
#' \item stroke The stroke color.
#' \item strokeWidth The stroke width, in pixels.
#' \item strokeOpacity The stroke opacity.
#' \item size [symbol] The pixel area of the symbol. For example in the case
#' of circles, the radius is determined in part by the square root of the size
#' value.
#' \item shape [symbol] The symbol shape to use. One of circle (default),
#' square, cross, diamond, triangle-up, or triangle-down (symbol only)
#' \item innerRadius [arc] The inner radius of the arc, in pixels.
#' \item outerRadius [arc] The outer radius of the arc, in pixels.
#' \item startAngle [arc] The start angle of the arc, in radians.
#' \item endAngle [arc] The end angle of the arc, in radians.
#' \item interpolate [area, line] The line interpolation method to use. One
#' of linear, step-before, step-after, basis, basis-open, cardinal,
#' cardinal-open, monotone.
#' \item tension [area, line] Depending on the interpolation type, sets the
#' tension parameter.
#' \item url [image] The URL from which to retrieve the image.
#' \item align [image, text] The horizontal alignment of the object. One of
#' left, right, center.
#' \item baseline [image, text] The vertical alignment of the object. One of
#' top, middle, bottom.
#' \item text [text] The text to display.
#' \item dx [text] The horizontal margin, in pixels, between the text label
#' and its anchor point. The value is ignored if the align property is center.
#' \item dy [text] The vertical margin, in pixels, between the text label
#' and its anchor point. The value is ignored if the baseline property is
#' middle.
#' \item angle [text] The rotation angle of the text, in degrees.
#' \item font [text] The typeface to set the text in (e.g., Helvetica Neue).
#' \item fontSize [text] The font size, in pixels.
#' \item fontWeight [text] The font weight (e.g., bold).
#' \item fontStyle [text] The font style (e.g., italic).
#' }
#'
#' To each property, you can assign any property object (\code{\link{prop}})
#' either locally (i.e. in the mark), or in a parent \code{layer}.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.