SMART datagrid v.1 > Classes > GridHeader
The location of sub text based on main text. 
It specifies by SubTextLocation constant. If subTextLocation of ColumnHeader is undefined, it will use this value.
Defaults to SubTextLocation.BOTTOM.
    grid.setHeader({
        subTextLocation : 'top'
    });
    // or, by property
    grid.header().setSubTextLocation(DataLudi.SubTextLocation.BOTTOM);