public string OriginalSource { get; set; }

Public Property OriginalSource As String
	Get
	Set

function get OriginalSource () : String
function set OriginalSource (value : String)

Setting a new filename/URL will cause that file to be loaded asynchronously.

If the filename specified for a load operation is a relative path, this property returns the non-resolved relative path as originally specified.

If this value set to be a "data tag" (such as a Global Alias), in runtime mode this property will continue to have the value of the tagname, and the Source property will be updated with the runtime value of the tag.