The parameter callback_getversion_mw specifies the name of the JavaScript method to be used as callback function to return the version of WebOffice map widget.
As result you get the version as string value while initializing the project.
Note: The parameter has to be set in combination with the parameter getversion_mw (see chapter Administration parameters for further information).
Example:
http://w-vpc-kr-w7-e:8080/WO_10R3_SP2_latestBuild/client_mapwidget/default.jsp?baseURL=http://w-vpc-kr-w7-e:8080/WO_10R3_SP2_latestBuild&project=WebOffice_SampleProject_Doku&width=600&height=400&view=Edit&mapmargin=1&getversion_mw=true&callback_getversion_mw=parent.getVersionResult