diff --git a/crates/tek/src/core/color.rs b/crates/tek/src/core/color.rs
index 93f086b6..519cb20a 100644
--- a/crates/tek/src/core/color.rs
+++ b/crates/tek/src/core/color.rs
@@ -24,9 +24,7 @@ pub struct ItemPalette {
     pub darker:   ItemColor,
     pub darkest:  ItemColor,
 }
-/// Adds TUI RGB representation to an OKHSL value.
 from!(|okhsl: Okhsl<f32>|ItemColor = Self { okhsl, rgb: okhsl_to_rgb(okhsl) });
-/// Adds OKHSL representation to a TUI RGB value.
 from!(|rgb: Color|ItemColor = Self { rgb, okhsl: rgb_to_okhsl(rgb) });
 // A single color within item theme parameters, in OKHSL and RGB representations.
 impl ItemColor {
diff --git a/crates/tek/src/tui/app_arranger.rs b/crates/tek/src/tui/app_arranger.rs
index 470a1391..70524722 100644
--- a/crates/tek/src/tui/app_arranger.rs
+++ b/crates/tek/src/tui/app_arranger.rs
@@ -64,12 +64,10 @@ render!(<Tui>|self: ArrangerTui|{
     let play           = Fixed::wh(5, 2, PlayPause(self.clock.is_rolling()));
     let transport      = TransportView::from((self, None, true));
     let with_transport = |x|col!([row!(![&play, &transport]), &x]);
-    let with_pool      = |x|Split::left(false, if self.show_pool {
-        self.splits[1]
-    } else {
-        0
-    }, PhraseListView(&self.phrases), x);
-    with_transport(with_pool(col!([
+    let with_pool      = |x|Split::left(false,
+        if self.show_pool { self.splits[1] } else { 0 },
+        PhraseListView(&self.phrases), x);
+    with_pool(with_transport(col!([
         &self.size,
         Fill::w(Fixed::h(20, arranger())),
         Fill::w(Fixed::h(25, &self.editor)),
diff --git a/crates/tek/src/tui/arranger_mode_v.rs b/crates/tek/src/tui/arranger_mode_v.rs
index f8d54086..0909b5b3 100644
--- a/crates/tek/src/tui/arranger_mode_v.rs
+++ b/crates/tek/src/tui/arranger_mode_v.rs
@@ -188,7 +188,7 @@ render!(<Tui>|self: ArrangerVCursor|render(move|to: &mut TuiOutput|{
             area
         },
     };
-    let bg = TuiTheme::border_bg();
+    let bg = Color::Rgb(0, 255, 0);
     if let Some([x, y, width, height]) = track_area {
         to.fill_fg([x,         y, 1, height], bg);
         to.fill_fg([x + width, y, 1, height], bg);
diff --git a/crates/tek/src/tui/tui_border.rs b/crates/tek/src/tui/tui_border.rs
index b7860f6d..14abf9f0 100644
--- a/crates/tek/src/tui/tui_border.rs
+++ b/crates/tek/src/tui/tui_border.rs
@@ -44,6 +44,12 @@ pub trait BorderStyle: Send + Sync + Copy {
     const S:  &'static str = "";
     const SW: &'static str = "";
     const W:  &'static str = "";
+
+    const N0: &'static str = "";
+    const S0: &'static str = "";
+    const W0: &'static str = "";
+    const E0: &'static str = "";
+
     fn n (&self) -> &str { Self::N }
     fn s (&self) -> &str { Self::S }
     fn e (&self) -> &str { Self::E }
@@ -67,30 +73,26 @@ pub trait BorderStyle: Send + Sync + Copy {
         let style = style.or_else(||self.style_horizontal());
         let [x, x2, y, y2] = area.lrtb();
         for x in x..x2.saturating_sub(1) {
-            self.draw_north(to, x, y, style);
-            self.draw_south(to, x, y2.saturating_sub(1), style);
+            to.blit(&Self::N, x, y, style);
+            to.blit(&Self::S, x, y2.saturating_sub(1), style)
         }
         Ok(area)
     }
-    #[inline] fn draw_north (
-        &self, to: &mut TuiOutput, x: u16, y: u16, style: Option<Style>
-    ) -> () {
-        to.blit(&Self::N, x, y, style)
-    }
-    #[inline] fn draw_south (
-        &self, to: &mut TuiOutput, x: u16, y: u16, style: Option<Style>
-    ) -> () {
-        to.blit(&Self::S, x, y, style)
-    }
     #[inline] fn draw_vertical (
         &self, to: &mut TuiOutput, style: Option<Style>
     ) -> Usually<[u16;4]> {
         let area = to.area();
         let style = style.or_else(||self.style_vertical());
         let [x, x2, y, y2] = area.lrtb();
-        for y in y..y2.saturating_sub(1) {
-            to.blit(&Self::W, x, y, style);
-            to.blit(&Self::E, x2.saturating_sub(1), y, style);
+        let h = y2 - y;
+        if h > 1 {
+            for y in y..y2.saturating_sub(1) {
+                to.blit(&Self::W, x, y, style);
+                to.blit(&Self::E, x2.saturating_sub(1), y, style);
+            }
+        } else if h > 0 {
+            to.blit(&Self::W0, x, y, style);
+            to.blit(&Self::E0, x2.saturating_sub(1), y, style);
         }
         Ok(area)
     }
@@ -100,7 +102,7 @@ pub trait BorderStyle: Send + Sync + Copy {
         let area = to.area();
         let style = style.or_else(||self.style_corners());
         let [x, y, width, height] = area.xywh();
-        if width > 0 && height > 0 {
+        if width > 1 && height > 1 {
             to.blit(&Self::NW, x, y, style);
             to.blit(&Self::NE, x + width - 1, y, style);
             to.blit(&Self::SW, x, y + height - 1, style);
@@ -198,7 +200,12 @@ border! {
     Brackets {
         "⎡" "" "⎤"
         ""     ""
-        "⎣" "" "⎦" fn style (&self) -> Option<Style> { Some(self.0) }
+        "⎣" "" "⎦"
+        const W0: &'static str = "[";
+        const E0: &'static str = "]";
+        const N0: &'static str = "⎴";
+        const S0: &'static str = "⎵";
+        fn style (&self) -> Option<Style> { Some(self.0) }
     }
 }