diff --git a/docs/navigation.md b/docs/navigation.md
index 54ba0ea..dff745e 100644
--- a/docs/navigation.md
+++ b/docs/navigation.md
@@ -29,6 +29,7 @@ will clear the numeric prefix if you want to cancel it.
 **Modifying the Sheet or Cells**
 
 * `e` or `i` will enter CellEdit mode for the current cell.
+* 'I' will toggle italic on the cell. 'B' will toggle bold.
 * `Ctrl-h` will shorten the width of the column you are on.
 * `Ctrl-l` will lengthen the width of the column you are on.
 
diff --git a/examples/test.xlsx b/examples/test.xlsx
index ac5e7f9..3276b32 100644
Binary files a/examples/test.xlsx and b/examples/test.xlsx differ
diff --git a/result b/result
deleted file mode 120000
index 774cfe9..0000000
--- a/result
+++ /dev/null
@@ -1 +0,0 @@
-/nix/store/mvnsm5ndvx4psah2d3y6yd2vwkypy9m7-sheetui-0.1.0
\ No newline at end of file
diff --git a/src/book/mod.rs b/src/book/mod.rs
index 6651a82..9f9225f 100644
--- a/src/book/mod.rs
+++ b/src/book/mod.rs
@@ -343,12 +343,6 @@ impl Book {
         sheet: u32,
         col_idx: usize,
     ) -> Result<()> {
-        // TODO(jeremy): This is a little hacky and the underlying model
-        // supports a better mechanism but UserModel doesn't support it yet.
-        // https://github.com/ironcalc/IronCalc/issues/273
-        // https://github.com/ironcalc/IronCalc/pull/276 is the coming fix.
-        // NOTE(jwall): Because of the number of cells required to modify
-        // this is crazy slow
         let area = self.get_col_range(sheet, col_idx);
         self.set_cell_style(style, &area)?;
         Ok(())
@@ -373,10 +367,6 @@ impl Book {
         sheet: u32,
         row_idx: usize,
     ) -> Result<()> {
-        // TODO(jeremy): This is a little hacky and the underlying model
-        // supports a better mechanism but UserModel doesn't support it yet.
-        // https://github.com/ironcalc/IronCalc/issues/273
-        // https://github.com/ironcalc/IronCalc/pull/276 is the coming fix.
         let area = self.get_row_range(sheet, row_idx);
         self.set_cell_style(style, &area)?;
         Ok(())
diff --git a/src/ui/mod.rs b/src/ui/mod.rs
index 662426d..6e872b3 100644
--- a/src/ui/mod.rs
+++ b/src/ui/mod.rs
@@ -669,6 +669,16 @@ impl<'ws> Workspace<'ws> {
                     self.state.reset_n_prefix();
                     self.state.char_queue.clear();
                 }
+                KeyCode::Char('B') => {
+                    let address = self.book.location.clone();
+                    let style = self.book.get_cell_style(self.book.current_sheet, &address).map(|s| s.font.b);
+                    self.toggle_bool_style(style, "font.b", &address)?;
+                }
+                KeyCode::Char('I') => {
+                    let address = self.book.location.clone();
+                    let style = self.book.get_cell_style(self.book.current_sheet, &address).map(|s| s.font.i);
+                    self.toggle_bool_style(style, "font.i", &address)?;
+                }
                 KeyCode::Char(d) if d.is_ascii_digit() => {
                     self.handle_numeric_prefix(d);
                 }
@@ -840,6 +850,24 @@ impl<'ws> Workspace<'ws> {
         return Ok(None);
     }
 
+    fn toggle_bool_style(&mut self, current_val: Option<bool>, path: &str, address: &Address) -> Result<(), anyhow::Error> {
+        let value = if let Some(b_val) = current_val {
+            if b_val { "false" } else { "true" }
+        } else {
+            "true"
+        };
+        self.book.set_cell_style(
+            &[(path, value)],
+            &Area {
+            sheet: self.book.current_sheet,
+            row: address.row as i32,
+            column: address.col as i32,
+            width: 1,
+            height: 1,
+        })?;
+        Ok(())
+    }
+
     fn paste_range(&mut self) -> Result<(), anyhow::Error> {
         match &self.state.clipboard {
             Some(ClipboardContents::Cell(contents)) => {
diff --git a/src/ui/render/viewport.rs b/src/ui/render/viewport.rs
index e3bf60e..847951a 100644
--- a/src/ui/render/viewport.rs
+++ b/src/ui/render/viewport.rs
@@ -193,15 +193,28 @@ impl<'ws> Viewport<'ws> {
         ci: usize,
         mut cell: Cell<'widget>,
     ) -> Cell<'widget> {
-        let style = self
+        // TODO(zaphar): Should probably create somekind of formatter abstraction.
+        if let Some(style) = self
             .book
-            .get_cell_style(self.book.current_sheet, &Address { row: ri, col: ci });
+            .get_cell_style(self.book.current_sheet, &Address { row: ri, col: ci }) {
+            cell = self.compute_cell_colors(&style, ri, ci, cell);
+            cell = if style.font.b {
+                cell.bold()
+            } else { cell };
+            cell = if style.font.i {
+                cell.italic()
+            } else { cell };
+        }
+        cell
+    }
+
+    fn compute_cell_colors<'widget>(&self, style: &ironcalc::base::types::Style, ri: usize, ci: usize, mut cell: Cell<'widget>) -> Cell<'widget> {
         let bg_color = map_color(
-            style.as_ref().map(|s| s.fill.bg_color.as_ref()).flatten(),
+            style.fill.bg_color.as_ref(),
             Color::Rgb(35, 33, 54),
         );
         let fg_color = map_color(
-            style.as_ref().map(|s| s.fill.fg_color.as_ref()).flatten(),
+            style.fill.fg_color.as_ref(),
             Color::White,
         );
         if let Some((start, end)) = &self.range_selection.map_or(None, |r| r.get_range()) {
@@ -212,12 +225,12 @@ impl<'ws> Viewport<'ws> {
         } else {
             cell = cell.bg(bg_color).fg(fg_color);
         }
-        match (self.book.location.row == ri, self.book.location.col == ci) {
+        cell = match (self.book.location.row == ri, self.book.location.col == ci) {
             (true, true) => cell.fg(Color::White).bg(Color::Rgb(57, 61, 71)),
             // TODO(zaphar): Support ironcalc style options
             _ => cell,
-        }
-        .bold()
+        };
+        cell
     }
 }
 
diff --git a/src/ui/test.rs b/src/ui/test.rs
index 356b695..64a7c9a 100644
--- a/src/ui/test.rs
+++ b/src/ui/test.rs
@@ -320,7 +320,7 @@ fn test_input_navitation_enter_key() {
 #[test]
 fn test_input_navitation_tab_key() {
     let mut ws = new_workspace();
-    let col = dbg!(ws.book.location.col);
+    let col = ws.book.location.col;
     assert_eq!(Some(&Modality::Navigate), ws.state.modality_stack.last());
     script()
         .tab()
@@ -352,7 +352,7 @@ fn test_input_navitation_shift_enter_key() {
 #[test]
 fn test_input_navitation_shift_tab_key() {
     let mut ws = new_workspace();
-    let col = dbg!(ws.book.location.col);
+    let col = ws.book.location.col;
     assert_eq!(Some(&Modality::Navigate), ws.state.modality_stack.last());
     script()
         .tab()
@@ -931,7 +931,6 @@ fn test_edit_mode_paste() {
     assert_eq!(Some(&Modality::Navigate), ws.state.modality_stack.last());
     ws.state.range_select.start = Some(Address { row: 1, col: 1 });
     ws.state.range_select.end = Some(Address { row: 2, col: 2 });
-    dbg!(ws.selected_range_to_string());
     script()
         .char('e')
         .ctrl('p')
@@ -1130,7 +1129,6 @@ macro_rules! assert_range_copy {
             Some(&Modality::RangeSelect),
             ws.state.modality_stack.iter().last()
         );
-        dbg!(ws.state.range_select.get_range());
         $script.run(&mut ws).expect("failed to run script");
         assert!(ws.state.clipboard.is_some());
         match ws.state.clipboard.unwrap() {
@@ -1234,7 +1232,13 @@ fn test_color_row() {
     for ci in [1, book::LAST_COLUMN] {
         let style = ws
             .book
-            .get_cell_style(ws.book.current_sheet, &Address { row: 1, col: ci as usize })
+            .get_cell_style(
+                ws.book.current_sheet,
+                &Address {
+                    row: 1,
+                    col: ci as usize,
+                },
+            )
             .expect("failed to get style");
         assert_eq!(
             "#800000",
@@ -1259,7 +1263,13 @@ fn test_color_col() {
     for ri in [1, book::LAST_ROW] {
         let style = ws
             .book
-            .get_cell_style(ws.book.current_sheet, &Address { row: ri as usize, col: 1 })
+            .get_cell_style(
+                ws.book.current_sheet,
+                &Address {
+                    row: ri as usize,
+                    col: 1,
+                },
+            )
             .expect("failed to get style");
         assert_eq!(
             "#800000",
@@ -1272,6 +1282,53 @@ fn test_color_col() {
     }
 }
 
+#[test]
+fn test_bold_text() {
+    let mut ws = new_workspace();
+    let before_style = ws
+        .book
+        .get_cell_style(0, &Address { row: 1, col: 1 })
+        .expect("Failed to get style");
+    assert!(!before_style.font.b);
+    script()
+        .char('B')
+        .run(&mut ws)
+        .expect("Unable to run script");
+    let style = ws
+        .book
+        .get_cell_style(0, &Address { row: 1, col: 1 })
+        .expect("Failed to get style");
+    assert!(style.font.b);
+    script()
+        .char('B')
+        .run(&mut ws)
+        .expect("Unable to run script");
+    assert!(!before_style.font.b);
+}
+
+#[test]
+fn test_italic_text() {
+    let mut ws = new_workspace();
+    let before_style = ws
+        .book
+        .get_cell_style(0, &Address { row: 1, col: 1 })
+        .expect("Failed to get style");
+    assert!(!before_style.font.i);
+    script()
+        .char('I')
+        .run(&mut ws)
+        .expect("Unable to run script");
+    let style = ws
+        .book
+        .get_cell_style(0, &Address { row: 1, col: 1 })
+        .expect("Failed to get style");
+    assert!(style.font.i);
+    script()
+        .char('I')
+        .run(&mut ws)
+        .expect("Unable to run script");
+    assert!(!before_style.font.i);
+}
 
 fn new_workspace<'a>() -> Workspace<'a> {
     Workspace::new_empty("en", "America/New_York").expect("Failed to get empty workbook")