Abstract: The present invention provides methods and apparatus that implement techniques for detecting modifications of a form template. The techniques feature receiving a document containing a template definition, and receiving one or more modifications to the document. The techniques further feature identifying one or more data bind nodes within the template definition. The techniques also feature finding any corresponding predetermined hash associated with the document for each of the identified data bind nodes. The techniques additionally feature calculating a hash for each identified data bind node, and comparing the calculated hash for each identified data bind node with the corresponding predetermined hash. The techniques further feature flagging the document if either the calculated hash for each data bind node does not match up with the corresponding predetermined hash or if no corresponding predetermined hash exists for one or more of the data bind nodes.

Abstract: Methods and apparatus, including computer program products, for communication with an external source application. In one aspect, the methods include determining in an independent reader application residing on a client computing system whether a property of an electronic package received and displayed from a source application residing on a server computing system is enabled, determining an authentication of the source application, and enabling a user interface-like communications channel between elements of the electronic package and the source application only if the property is enabled and the source application authenticated, wherein elements of the displayed electronic package are sent to and incorporated by the source application upon authentication of the property of the electronic package and the property of the source application.

Abstract: Methods and apparatus, including computer program products, for communication with an external source application. In one aspect, the methods include determining in an independent reader application residing on a client computing system whether a property of an electronic package received and displayed from a source application residing on a server computing system is enabled, determining an authentication of the source application, and enabling a user interface-like communications channel between elements of the electronic package and the source application only if the property is enabled and the source application authenticated, wherein elements of the displayed electronic package are sent to and incorporated by the source application upon authentication of the property of the electronic package and the property of the source application.