Type: url

A string representing a Uniform Resource Locator (RFC 1738), specifying a web address where a resource can be found or information about the resource discovered.

URI: vaspec:Url

Root (builtin) type		ga4ghString

Other properties

Comments:		Used in place of a plain string datatype when a resolvable web address for a resource is desired. Common URL protocols are http{s}:, ftp:, mailto: and mllp:, though many others are defined.