Provides the ability to override the web page generation template defined for the screen definition associated with this UIScreen. Leave as "Standard" to use the PageTemplate, which is displayed in a read-only property in the grid.
Screen definition Web Page Templates are located in the folder c:\program files\flynet\Viewer\Studio\ProjTemplates\WebPages.
Not displayed for UIScreen objects that are children of a composite page such as a UI Composite or UINotebookTab, which set their own templates.
