diff --git a/deps/tengri b/deps/tengri
index ecae2082..090546b2 160000
--- a/deps/tengri
+++ b/deps/tengri
@@ -1 +1 @@
-Subproject commit ecae2082edf1f3aa4ae048625c24a00f5fb13e56
+Subproject commit 090546b2d6fba3beb69b8ff65b30e5492d8a7b66
diff --git a/device/arranger.rs b/device/arranger.rs
index 4206c369..af479133 100644
--- a/device/arranger.rs
+++ b/device/arranger.rs
@@ -371,8 +371,8 @@ impl Arrangement {
 }
 
 pub(crate) fn wrap (bg: Color, fg: Color, content: impl Content<TuiOut>) -> impl Content<TuiOut> {
-    let left  = Tui::fg_bg(bg, Reset, Fixed::X(1, RepeatV("▐")));
-    let right = Tui::fg_bg(bg, Reset, Fixed::X(1, RepeatV("▌")));
+    let left  = Tui::fg_bg(bg, Reset, Fixed::X(1, Repeat::Y("▐")));
+    let right = Tui::fg_bg(bg, Reset, Fixed::X(1, Repeat::Y("▌")));
     Bsp::e(left, Bsp::w(right, Tui::fg_bg(fg, bg, content)))
 }
 
diff --git a/device/clip.rs b/device/clip.rs
index ac0ca95b..0d503641 100644
--- a/device/clip.rs
+++ b/device/clip.rs
@@ -186,16 +186,16 @@ pub trait ClipsView:
             let w = if self.selection().track() == Some(track_index)
                 && let Some(editor) = self.editor ()
             {
-                editor.width().max(24).max(track.width)
+                (editor.measure_width() as usize).max(24).max(track.width)
             } else {
                 track.width
             } as u16;
             let y = if self.selection().scene() == Some(scene_index)
                 && let Some(editor) = self.editor ()
             {
-                editor.height().max(12)
+                (editor.measure_height() as usize).max(12)
             } else {
-                Self::H_SCENE
+                Self::H_SCENE as usize
             } as u16;
 
             to.place(&Fixed::XY(w, y, Bsp::b(
diff --git a/device/editor.rs b/device/editor.rs
index 20bd1b1f..72098c52 100644
--- a/device/editor.rs
+++ b/device/editor.rs
@@ -170,8 +170,12 @@ impl MidiEditor {
     }
 }
 
-impl Draw<TuiOut> for MidiEditor { fn draw (&self, to: &mut TuiOut) { self.content().draw(to) } }
-impl Layout<TuiOut> for MidiEditor { fn layout (&self, to: [u16;4]) -> [u16;4] { self.content().layout(to) } }
+impl Draw<TuiOut> for MidiEditor {
+    fn draw (&self, to: &mut TuiOut) { self.content().draw(to) }
+}
+impl Layout<TuiOut> for MidiEditor {
+    fn layout (&self, to: XYWH<u16>) -> XYWH<u16> { self.content().layout(to) }
+}
 impl HasContent<TuiOut> for MidiEditor {
     fn content (&self) -> impl Content<TuiOut> { self.autoscroll(); /*self.autozoom();*/ self.size.of(&self.mode) }
 }
@@ -267,8 +271,12 @@ pub(crate) fn note_y_iter (note_lo: usize, note_hi: usize, y0: u16)
     (note_lo..=note_hi).rev().enumerate().map(move|(y, n)|(y, y0 + y as u16, n))
 }
 
-impl Draw<TuiOut> for PianoHorizontal { fn draw (&self, to: &mut TuiOut) { self.content().draw(to) } }
-impl Layout<TuiOut> for PianoHorizontal { fn layout (&self, to: [u16;4]) -> [u16;4] { self.content().layout(to) } }
+impl Draw<TuiOut> for PianoHorizontal {
+    fn draw (&self, to: &mut TuiOut) { self.content().draw(to) }
+}
+impl Layout<TuiOut> for PianoHorizontal {
+    fn layout (&self, to: XYWH<u16>) -> XYWH<u16> { self.content().layout(to) }
+}
 impl HasContent<TuiOut> for PianoHorizontal {
     fn content (&self) -> impl Content<TuiOut> {
         Bsp::s(
@@ -357,7 +365,7 @@ impl PianoHorizontal {
         let buffer     = self.buffer.clone();
         Thunk::new(move|to: &mut TuiOut|{
             let source = buffer.read().unwrap();
-            let [x0, y0, w, _h] = to.area().xywh();
+            let XYWH(x0, y0, w, _h) = to.area();
             //if h as usize != note_axis {
                 //panic!("area height mismatch: {h} <> {note_axis}");
             //}
@@ -391,7 +399,7 @@ impl PianoHorizontal {
         let time_zoom  = self.get_time_zoom();
         let style      = Some(Style::default().fg(self.color.lightest.rgb));
         Thunk::new(move|to: &mut TuiOut|{
-            let [x0, y0, w, _] = to.area().xywh();
+            let XYWH(x0, y0, w, _) = to.area();
             for (_area_y, screen_y, note) in note_y_iter(note_lo, note_hi, y0) {
                 if note == note_pos {
                     for x in 0..w {
@@ -422,7 +430,7 @@ impl PianoHorizontal {
         let off_style  = Some(Style::default().fg(Tui::g(255)));
         let on_style   = Some(Style::default().fg(Rgb(255,0,0)).bg(color.base.rgb).bold());
         Fill::Y(Fixed::X(self.keys_width, Thunk::new(move|to: &mut TuiOut|{
-            let [x, y0, _w, _h] = to.area().xywh();
+            let XYWH(x, y0, _w, _h) = to.area();
             for (_area_y, screen_y, note) in note_y_iter(note_lo, note_hi, y0) {
                 to.blit(&to_key(note), x, screen_y, key_style);
                 if note > 127 {
@@ -438,7 +446,7 @@ impl PianoHorizontal {
     }
     fn timeline (&self) -> impl Content<TuiOut> + '_ {
         Fill::X(Fixed::Y(1, Thunk::new(move|to: &mut TuiOut|{
-            let [x, y, w, _h] = to.area();
+            let XYWH(x, y, w, _h) = to.area();
             let style = Some(Style::default().dim());
             let length = self.clip.as_ref().map(|p|p.read().unwrap().length).unwrap_or(1);
             for (area_x, screen_x) in (0..w).map(|d|(d, d+x)) {
diff --git a/device/sampler.rs b/device/sampler.rs
index 77aea1b2..c4905944 100644
--- a/device/sampler.rs
+++ b/device/sampler.rs
@@ -760,9 +760,9 @@ impl Sampler {
         let lo_fg = Color::Rgb(64, 64, 64);
         let lo_bg = if y == 7 { Color::Reset } else { tx_bg };
         Fixed::XY(w, h, Bsp::s(
-            Fixed::Y(1, Tui::fg_bg(hi_fg, hi_bg, RepeatH(Phat::<()>::LO))),
+            Fixed::Y(1, Tui::fg_bg(hi_fg, hi_bg, Repeat::X(Phat::<()>::LO))),
             Bsp::n(
-                Fixed::Y(1, Tui::fg_bg(lo_fg, lo_bg, RepeatH(Phat::<()>::HI))),
+                Fixed::Y(1, Tui::fg_bg(lo_fg, lo_bg, Repeat::X(Phat::<()>::HI))),
                 Fill::X(Fixed::Y(1, Tui::fg_bg(tx_fg, tx_bg, name))),
             ),
         ))
@@ -883,7 +883,7 @@ fn draw_list_item (sample: &Option<Arc<RwLock<Sample>>>) -> String {
 fn draw_viewer (sample: Option<&Arc<RwLock<Sample>>>) -> impl Content<TuiOut> + use<'_> {
     let min_db = -64.0;
     Thunk::new(move|to: &mut TuiOut|{
-        let [x, y, width, height] = to.area();
+        let XYWH(x, y, width, height) = to.area();
         let area = Rect { x, y, width, height };
         if let Some(sample) = &sample {
             let sample = sample.read().unwrap();
diff --git a/device/scene.rs b/device/scene.rs
index 271daa5d..3de97989 100644
--- a/device/scene.rs
+++ b/device/scene.rs
@@ -108,7 +108,7 @@ pub trait ScenesView:
             } else {
                 Self::H_SCENE
             };
-            if y + height <= self.clips_size().h() {
+            if y + height <= self.clips_size().h() as u16 {
                 let data = (s, scene, y, y + height);
                 y += height;
                 Some(data)
diff --git a/device/sequencer.rs b/device/sequencer.rs
index 46c93cd3..c12a263f 100644
--- a/device/sequencer.rs
+++ b/device/sequencer.rs
@@ -388,7 +388,7 @@ pub trait MidiRecord: MidiMonitor + HasClock + HasPlayClip {
     }
 }
 
-pub trait MidiViewer: HasSize<TuiOut> + MidiRange + MidiPoint + Debug + Send + Sync {
+pub trait MidiViewer: Measured<TuiOut> + MidiRange + MidiPoint + Debug + Send + Sync {
     fn buffer_size (&self, clip: &MidiClip) -> (usize, usize);
     fn redraw (&self);
     fn clip (&self) -> &Option<Arc<RwLock<MidiClip>>>;
diff --git a/device/track.rs b/device/track.rs
index c583381c..15b38dcf 100644
--- a/device/track.rs
+++ b/device/track.rs
@@ -188,7 +188,7 @@ pub trait TracksView:
     ScenesView +
     HasMidiIns +
     HasMidiOuts +
-    HasSize<TuiOut> +
+    Measured<TuiOut> +
     HasTrackScroll +
     HasSelection +
     HasEditor +