In the Application tab you can find the External call test utility button for generating and testing parameterized HTTP GET/POST calls to WebOffice 10 R3 (similar to ArcGIS Server REST API). See chapter WebOffice API's for details on supported call parameters.

External call test utility page in WebOffice 10 R3 administration pages
Using the External call test page you can easily ‘click-by-click’ generate parameterized calls to WebOffice 10 R3. The page ensures generation of syntactically correct calls.
Note: You can open the test page in the browser without opening the WebOffice 10 R3 administration pages first by using the URL <WebOffice base url>/testextcall.htm

Configuring an external HTTP call to WebOffice 10 R3 for querying data – WebOffice 10 R3 administration pages