An expression based on the usage environment of a Link typically including predicates that test the current user's membership in a group or possession of a user role that when evaluated truthfully enables an applicable value for a Link property. For example, User_* indicates that the link property setting applies to all users while User.name = joe indicates the rule applies only to a specific user named joe.
Optionalsheet
An optional property that a Link creator can specify to cause the client to navigate to a specific sheet in the generated Analytics Application when opening the generated Analytics Application from the selection Analytics Application's navpoint panel.