@@ -13,6 +13,7 @@ pub struct Appearance {
1313    pub  diff_colors :  Vec < Color32 > , 
1414    pub  diff_bg_color :  Option < Color32 > , 
1515    pub  theme :  egui:: Theme , 
16+     pub  show_symbol_sizes :  ShowSymbolSizeState , 
1617
1718    // Applied by theme 
1819    #[ serde( skip) ]  
@@ -43,6 +44,12 @@ pub struct Appearance {
4344    pub  next_code_font :  Option < FontId > , 
4445} 
4546
47+ #[ derive( serde:: Deserialize ,  serde:: Serialize ,  PartialEq ,  Debug ) ]  
48+ pub  enum  ShowSymbolSizeState  { 
49+     Off , 
50+     Decimal , 
51+     Hex , 
52+ } 
4653pub  struct  FontState  { 
4754    definitions :  egui:: FontDefinitions , 
4855    source :  font_kit:: source:: SystemSource , 
@@ -60,6 +67,7 @@ impl Default for Appearance {
6067            code_font :  DEFAULT_CODE_FONT , 
6168            diff_colors :  DEFAULT_COLOR_ROTATION . to_vec ( ) , 
6269            theme :  egui:: Theme :: Dark , 
70+             show_symbol_sizes :  ShowSymbolSizeState :: Off , 
6371            text_color :  Color32 :: GRAY , 
6472            emphasized_text_color :  Color32 :: LIGHT_GRAY , 
6573            deemphasized_text_color :  Color32 :: DARK_GRAY , 
@@ -302,6 +310,26 @@ pub fn appearance_window(ctx: &egui::Context, show: &mut bool, appearance: &mut
302310            appearance, 
303311        ) ; 
304312        ui. separator ( ) ; 
313+         egui:: ComboBox :: from_label ( "Show symbol sizes" ) 
314+             . selected_text ( format ! ( "{:?}" ,  appearance. show_symbol_sizes) ) 
315+             . show_ui ( ui,  |ui| { 
316+                 ui. selectable_value ( 
317+                     & mut  appearance. show_symbol_sizes , 
318+                     ShowSymbolSizeState :: Off , 
319+                     "Off" , 
320+                 ) ; 
321+                 ui. selectable_value ( 
322+                     & mut  appearance. show_symbol_sizes , 
323+                     ShowSymbolSizeState :: Decimal , 
324+                     "Decimal" , 
325+                 ) ; 
326+                 ui. selectable_value ( 
327+                     & mut  appearance. show_symbol_sizes , 
328+                     ShowSymbolSizeState :: Hex , 
329+                     "Hex" , 
330+                 ) ; 
331+             } ) ; 
332+         ui. separator ( ) ; 
305333        ui. horizontal ( |ui| { 
306334            ui. label ( "Diff fill color:" ) ; 
307335            let  mut  diff_bg_color =
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