MetaStudio and DataScraper do not manipulate attribute url which is only stored in the Data Structure Specification File which denotes the data structure of data extraction result files. As a result, 3rd party applications can make use of these information to manipulate the results in some particular ways.
For example, Index Manager, bundled with DataScraper, makes use of this information to manipulate and present URLs. At first, Index Manager determines if an URL is an completed one. If it isn't, Index Manager will try to complete it before indexing it. When the URL are to be presented as a search result, DataStore server present it as a hyper link.
Users of MetaSeeker can develop a lot of applications to manipulate the attribute in totally different ways.