The Border parameter is a 4 element, comma delimited array holding the settings used for defining the width of the table's border, style, color and radius.
By using the Width element you can tell the API how wide, in pixels, the table border should be. Integer values between 1 and 255 are allowed. However, unless a specifc Style element is also given, no border will be shown.
By using the Style element you can tell the API which table border style should be used. Allowed values are "dashed", "dotted", "double", "groove", "inset", "outset", "ridge" and "solid". If no value is sent, no border will be shown.
By using the Color element you can tell the API what table border color should be used. Any valid hex triplet is allowed. Do not send the "#", however. A useful tool to help you is the HTML Color Picker.
By using the Radius element you can tell the API what the table border radius, in pixels, should be. Integer values between 0 and 255 are allowed.