static Evolve_Widget_Packing_Option _evolve_packing_options[] = {               
     {                                                                          
        "box",                                                                  
        {                                                                       
           "fill_policy",
           {                                                                    
                { "__default__", ETK_BOX_EXPAND_FILL },                         
                { "none", ETK_BOX_NONE },                                       
                { "fill", ETK_BOX_FILL },                                       
                { "expand", ETK_BOX_EXPAND },                                   
                { "expand_fill", ETK_BOX_EXPAND_FILL },                         
                { "shrink_opposite", ETK_BOX_SHRINK_OPPOSITE },                 
                { NULL, 0 }                                                     
           }                                                                    
        }                                                                       
        {                                                                       
           "group",
           {                                                                    
                { "start", ETK_BOX_START },                                     
                { "end", ETK_BOX_END },                                         
                { NULL, 0 }                                                     
           }
        },                                                                      
        {                                                                       
           NULL,                                                                
           NULL                                                                 
        },                                                                      
     }                                                                          
};