Icarus Class: Href
Class representing a hyperlink reference.
libs Attribute is multivalued (list). Library Attribute may stay unnamed in attribute list. 
  One or more databanks to be linked to.
url  
  the URL to the data source. Parameters passed to the $HLink function can be used here and must be specified as $p1, $p2 ...$p9
field Attribute is multivalued (list). SrsField  
  One or more fields to be queried. By default the ID field is used
link  
  obsolete
check  Attribute has a default value. n
  Use one of the following values. y n
  Inserts the link after checking the validity by performing the query expressed in the link. Checks only links to internal SRS server.