AddRow (PPGLayout) *
By default each item on a layout is drawn below the previous element. However, sometimes it is desirable to save space by putting multiple items on the same row. This method lets you start a row of controls. All groups, parameters, buttons or other items added after this call will appear on the same horizontal row until PPGLayout.EndRow is called.
This method is provided for convenience when creating the layout for an object. Internally Softimage does not create PPGItem objects to represent when a row begins or ends. Instead it uses the "continue" flag (see siUIContinue in siPPGItemAttribute).
Autodesk Softimage 2011