diff --git a/engine/README.md b/engine/README.md
index 0ac4a79c..03d7e53d 100644
--- a/engine/README.md
+++ b/engine/README.md
@@ -40,9 +40,9 @@ it composes:
 the manner of output is determined by the
 `Engine::Output` type, a mutable pointer to which
 is passed to the render method, e.g. in the case of
-the `Tui` engine: `fn render(&self, output: &mut TuiOutput)`
+the `Tui` engine: `fn render(&self, output: &mut TuiOut)`
 
-you can use `TuiOutput::blit` and `TuiOutput::place`
+you can use `TuiOut::blit` and `TuiOut::place`
 to draw at specified coordinates of the display, and/or
 directly modify the underlying `ratatui::Buffer` at
 `output.buffer`
diff --git a/engine/src/lib.rs b/engine/src/lib.rs
index dd47d059..00fb8356 100644
--- a/engine/src/lib.rs
+++ b/engine/src/lib.rs
@@ -68,7 +68,7 @@ pub type Perhaps<T> = Result<Option<T>, Box<dyn Error>>;
         }
     }
     impl Handle<Tui> for TestComponent {
-        fn handle (&mut self, from: &TuiInput) -> Perhaps<bool> {
+        fn handle (&mut self, from: &TuiIn) -> Perhaps<bool> {
             Ok(None)
         }
     }
diff --git a/engine/src/tui.rs b/engine/src/tui.rs
index cfa2e76e..3bdb54ac 100644
--- a/engine/src/tui.rs
+++ b/engine/src/tui.rs
@@ -39,9 +39,9 @@ impl Engine for Tui {
     type Unit    = u16;
     type Size    = [Self::Unit;2];
     type Area    = [Self::Unit;4];
-    type Input   = TuiInput;
+    type Input   = TuiIn;
     type Handled = bool;
-    type Output  = TuiOutput;
+    type Output  = TuiOut;
     fn exited (&self) -> bool {
         self.exited.fetch_and(true, Relaxed)
     }
@@ -125,7 +125,7 @@ impl<T: Content<Tui> + Handle<Tui> + Sized + 'static> TuiRun<T> for Arc<RwLock<T
                     },
                     _ => {
                         let exited = exited.clone();
-                        if let Err(e) = state.write().unwrap().handle(&TuiInput { event, exited }) {
+                        if let Err(e) = state.write().unwrap().handle(&TuiIn { event, exited }) {
                             panic!("{e}")
                         }
                     }
@@ -153,7 +153,7 @@ impl<T: Content<Tui> + Handle<Tui> + Sized + 'static> TuiRun<T> for Arc<RwLock<T
                     buffer.resize(size);
                     buffer.reset();
                 }
-                let mut output = TuiOutput { buffer, area: [0, 0, width, height] };
+                let mut output = TuiOut { buffer, area: [0, 0, width, height] };
                 state.render(&mut output);
                 buffer = engine.write().unwrap().flip(output.buffer, size);
             }
diff --git a/engine/src/tui/tui_input.rs b/engine/src/tui/tui_input.rs
index 55ab6c36..e1e06b88 100644
--- a/engine/src/tui/tui_input.rs
+++ b/engine/src/tui/tui_input.rs
@@ -1,12 +1,12 @@
 use crate::{*, tui::*};
 
 #[derive(Debug, Clone)]
-pub struct TuiInput {
+pub struct TuiIn {
     pub(crate) exited: Arc<AtomicBool>,
     pub(crate) event: crossterm::event::Event,
 }
 
-impl Input<Tui> for TuiInput {
+impl Input<Tui> for TuiIn {
     type Event = crossterm::event::Event;
     fn event (&self) -> &crossterm::event::Event {
         &self.event
@@ -124,7 +124,7 @@ pub const fn shift (key: KeyEvent) -> KeyEvent {
 
 /*
 
-impl TuiInput {
+impl TuiIn {
     // TODO remove
     pub fn handle_keymap <T> (&self, state: &mut T, keymap: &KeyMap<T>) -> Usually<bool> {
         match self.event() {
diff --git a/engine/src/tui/tui_output.rs b/engine/src/tui/tui_output.rs
index b5e267e1..80334616 100644
--- a/engine/src/tui/tui_output.rs
+++ b/engine/src/tui/tui_output.rs
@@ -1,11 +1,11 @@
 use crate::{*, tui::*};
 
-pub struct TuiOutput {
+pub struct TuiOut {
     pub buffer: Buffer,
     pub area:   [u16;4]
 }
 
-impl Output<Tui> for TuiOutput {
+impl Output<Tui> for TuiOut {
     #[inline] fn area (&self) -> [u16;4] { self.area }
     #[inline] fn area_mut (&mut self) -> &mut [u16;4] { &mut self.area }
     #[inline] fn place (&mut self, area: [u16;4], content: &impl Content<Tui>) {
@@ -20,7 +20,7 @@ impl Output<Tui> for TuiOutput {
     }
 }
 
-impl TuiOutput {
+impl TuiOut {
     pub fn buffer_update (&mut self, area: [u16;4], callback: &impl Fn(&mut Cell, u16, u16)) {
         buffer_update(&mut self.buffer, area, callback);
     }
@@ -69,6 +69,38 @@ impl TuiOutput {
     }
 }
 
+impl Content<Tui> for &str {
+    fn area (&self, to: [u16;4]) -> [u16;4] {
+        [to[0], to[1], self.chars().count() as u16, 1]
+    }
+    fn render (&self, to: &mut TuiOut) {
+        to.blit(self, to.area.x(), to.area.y(), None)
+    }
+}
+
+impl Content<Tui> for String {
+    fn area (&self, to: [u16;4]) -> [u16;4] {
+        [to[0], to[1], self.chars().count() as u16, 1]
+    }
+    fn render (&self, to: &mut TuiOut) {
+        to.blit(self, to.area.x(), to.area.y(), None)
+    }
+}
+
+pub fn buffer_update (buf: &mut Buffer, area: [u16;4], callback: &impl Fn(&mut Cell, u16, u16)) {
+    for row in 0..area.h() {
+        let y = area.y() + row;
+        for col in 0..area.w() {
+            let x = area.x() + col;
+            if x < buf.area.width && y < buf.area.height {
+                callback(buf.get_mut(x, y), col, row);
+            }
+        }
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
 //impl Area<u16> for Rect {
     //fn x (&self) -> u16 { self.x }
     //fn y (&self) -> u16 { self.y }
@@ -86,33 +118,3 @@ pub fn half_block (lower: bool, upper: bool) -> Option<char> {
 }
 
 //impl<T: Content<Tui>> Render<Tui> for T {}
-
-impl Content<Tui> for &str {
-    fn area (&self, to: [u16;4]) -> [u16;4] {
-        [to[0], to[1], self.chars().count() as u16, 1]
-    }
-    fn render (&self, to: &mut TuiOutput) {
-        to.blit(self, to.area.x(), to.area.y(), None)
-    }
-}
-
-impl Content<Tui> for String {
-    fn area (&self, to: [u16;4]) -> [u16;4] {
-        [to[0], to[1], self.chars().count() as u16, 1]
-    }
-    fn render (&self, to: &mut TuiOutput) {
-        to.blit(self, to.area.x(), to.area.y(), None)
-    }
-}
-
-pub fn buffer_update (buf: &mut Buffer, area: [u16;4], callback: &impl Fn(&mut Cell, u16, u16)) {
-    for row in 0..area.h() {
-        let y = area.y() + row;
-        for col in 0..area.w() {
-            let x = area.x() + col;
-            if x < buf.area.width && y < buf.area.height {
-                callback(buf.get_mut(x, y), col, row);
-            }
-        }
-    }
-}
diff --git a/examples/demo.rs.fixme b/examples/demo.rs.fixme
index d235f005..cfd7d7b0 100644
--- a/examples/demo.rs.fixme
+++ b/examples/demo.rs.fixme
@@ -105,7 +105,7 @@ impl Content for Demo<Tui> {
 }
 
 impl Handle<Tui> for Demo<Tui> {
-    fn handle (&mut self, from: &TuiInput) -> Perhaps<bool> {
+    fn handle (&mut self, from: &TuiIn) -> Perhaps<bool> {
         use KeyCode::{PageUp, PageDown};
         match from.event() {
             key_expr!(PageUp) => {
diff --git a/examples/demo_bsp.rs.fixme b/examples/demo_bsp.rs.fixme
index 453134f8..997956cd 100644
--- a/examples/demo_bsp.rs.fixme
+++ b/examples/demo_bsp.rs.fixme
@@ -13,7 +13,7 @@ render!(<Tui>|self:BspDemo<Tui>|Fill::xy(Align::c(
 )));
 
 impl Handle<Tui> for BspDemo<Tui> {
-    fn handle (&mut self, from: &TuiInput) -> Perhaps<bool> {
+    fn handle (&mut self, from: &TuiIn) -> Perhaps<bool> {
         Ok(None)
     }
 }
diff --git a/layout/src/measure.rs b/layout/src/measure.rs
index 584bbef4..d0529df4 100644
--- a/layout/src/measure.rs
+++ b/layout/src/measure.rs
@@ -85,7 +85,7 @@ impl<E: Engine> Measure<E> {
     //fn min_size (&self, _: [u16;2]) -> Perhaps<[u16;2]> {
         //Ok(Some([0u16.into(), 0u16.into()].into()))
     //}
-    //fn render (&self, to: &mut TuiOutput) -> Usually<()> {
+    //fn render (&self, to: &mut TuiOut) -> Usually<()> {
         //self.set_w(to.area().w());
         //self.set_h(to.area().h());
         //Ok(())
@@ -98,7 +98,7 @@ impl<E: Engine> Measure<E> {
     //}
 //}
 
-//render!(<Tui>|self: ShowMeasure<'a>|render(|to: &mut TuiOutput|Ok({
+//render!(<Tui>|self: ShowMeasure<'a>|render(|to: &mut TuiOut|Ok({
     //let w = self.0.w();
     //let h = self.0.h();
     //to.blit(&format!(" {w} x {h} "), to.area.x(), to.area.y(), Some(
@@ -114,7 +114,7 @@ impl<E: Engine> Measure<E> {
     //fn min_size (&self, to: [u16;2]) -> Perhaps<[u16;2]> {
         //self.1.min_size(to)
     //}
-    //fn render (&self, to: &mut TuiOutput) -> Usually<()> {
+    //fn render (&self, to: &mut TuiOut) -> Usually<()> {
         //let [x, y, w, h] = to.area();
         //self.1.render(to)?;
         //Ok(to.blit(&format!("{w}x{h}+{x}+{y}"), x, y, Some(Style::default().green())))
diff --git a/src/arranger/arranger_command.rs b/src/arranger/arranger_command.rs
index d54e8137..d9d2736a 100644
--- a/src/arranger/arranger_command.rs
+++ b/src/arranger/arranger_command.rs
@@ -160,7 +160,7 @@ input_to_command!(ArrangerCommand: <Tui>|state: ArrangerTui, input|match input.e
         None
     })?
 });
-fn to_arrangement_command (state: &ArrangerTui, input: &TuiInput) -> Option<ArrangerCommand> {
+fn to_arrangement_command (state: &ArrangerTui, input: &TuiIn) -> Option<ArrangerCommand> {
     use ArrangerCommand      as Cmd;
     use ArrangerSelection    as Selected;
     use ArrangerSceneCommand as Scene;
diff --git a/src/arranger/arranger_v/v_cursor.rs b/src/arranger/arranger_v/v_cursor.rs
index 5859f9d6..3582cd07 100644
--- a/src/arranger/arranger_v/v_cursor.rs
+++ b/src/arranger/arranger_v/v_cursor.rs
@@ -25,7 +25,7 @@ from!(|args:(&ArrangerTui, usize)|ArrangerVCursor = Self {
     }),
 });
 impl Content<Tui> for ArrangerVCursor {
-    fn render (&self, to: &mut TuiOutput) {
+    fn render (&self, to: &mut TuiOut) {
         let area     = to.area();
         let focused  = true;
         let selected = self.selected;
diff --git a/src/border.rs b/src/border.rs
index afc77bd3..0959d373 100644
--- a/src/border.rs
+++ b/src/border.rs
@@ -53,7 +53,7 @@ pub trait BorderStyle: Send + Sync + Copy {
     fn sw (&self) -> &str { Self::SW }
     fn se (&self) -> &str { Self::SE }
     #[inline] fn draw <'a> (
-        &self, to: &mut TuiOutput
+        &self, to: &mut TuiOut
     ) -> Usually<()> {
         self.draw_horizontal(to, None)?;
         self.draw_vertical(to, None)?;
@@ -61,7 +61,7 @@ pub trait BorderStyle: Send + Sync + Copy {
         Ok(())
     }
     #[inline] fn draw_horizontal (
-        &self, to: &mut TuiOutput, style: Option<Style>
+        &self, to: &mut TuiOut, style: Option<Style>
     ) -> Usually<[u16;4]> {
         let area = to.area();
         let style = style.or_else(||self.style_horizontal());
@@ -73,7 +73,7 @@ pub trait BorderStyle: Send + Sync + Copy {
         Ok(area)
     }
     #[inline] fn draw_vertical (
-        &self, to: &mut TuiOutput, style: Option<Style>
+        &self, to: &mut TuiOut, style: Option<Style>
     ) -> Usually<[u16;4]> {
         let area = to.area();
         let style = style.or_else(||self.style_vertical());
@@ -91,7 +91,7 @@ pub trait BorderStyle: Send + Sync + Copy {
         Ok(area)
     }
     #[inline] fn draw_corners (
-        &self, to: &mut TuiOutput, style: Option<Style>
+        &self, to: &mut TuiOut, style: Option<Style>
     ) -> Usually<[u16;4]> {
         let area = to.area();
         let style = style.or_else(||self.style_corners());
@@ -129,7 +129,7 @@ macro_rules! border {
         #[derive(Copy, Clone)]
         pub struct $T(pub Style);
         impl Content<Tui> for $T {
-            fn render (&self, to: &mut TuiOutput) { self.draw(to); }
+            fn render (&self, to: &mut TuiOut) { self.draw(to); }
         }
     )+}
 }
diff --git a/src/focus.rs b/src/focus.rs
index b08f482e..4ab3f390 100644
--- a/src/focus.rs
+++ b/src/focus.rs
@@ -246,7 +246,7 @@ pub trait FocusWrap<T> {
     fn wrap <W: Content<Tui>> (self, focus: T, content: &'_ W) -> impl Content<Tui> + '_;
 }
 
-pub fn to_focus_command <T: Send + Sync> (input: &TuiInput) -> Option<FocusCommand<T>> {
+pub fn to_focus_command <T: Send + Sync> (input: &TuiIn) -> Option<FocusCommand<T>> {
     Some(match input.event() {
         key_pat!(Tab)           => FocusCommand::Next,
         key_pat!(Shift-Tab)     => FocusCommand::Prev,
diff --git a/src/lib.rs b/src/lib.rs
index 65854e7a..0e08679d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -13,7 +13,7 @@ pub(crate) use ::tek_layout::{
         Input, Handle, handle,
         kexp, key_pat, key_event_pat, key_event_expr,
         tui::{
-            Tui, TuiInput, TuiOutput,
+            Tui, TuiIn, TuiOut,
             crossterm::{
                 self,
                 event::{
diff --git a/src/mixer.rs b/src/mixer.rs
index 70d0960f..ea88ee18 100644
--- a/src/mixer.rs
+++ b/src/mixer.rs
@@ -97,7 +97,7 @@ pub struct TrackView<'a> {
 }
 
 impl<'a> Content<Tui> for TrackView<'a> {
-    fn render (&self, to: &mut TuiOutput) {
+    fn render (&self, to: &mut TuiOut) {
         todo!();
         //let mut area = to.area();
         //if let Some(chain) = self.chain {
diff --git a/src/plugin.rs b/src/plugin.rs
index a12ca15f..bcec2c0f 100644
--- a/src/plugin.rs
+++ b/src/plugin.rs
@@ -151,7 +151,7 @@ impl Plugin {
     }
 }
 impl Content<Tui> for Plugin {
-    fn render (&self, to: &mut TuiOutput) {
+    fn render (&self, to: &mut TuiOut) {
         let area = to.area();
         let [x, y, _, height] = area;
         let mut width = 20u16;
@@ -187,7 +187,7 @@ impl Content<Tui> for Plugin {
     }
 }
 
-fn draw_header (state: &Plugin, to: &mut TuiOutput, x: u16, y: u16, w: u16) {
+fn draw_header (state: &Plugin, to: &mut TuiOut, x: u16, y: u16, w: u16) {
     let style  = Style::default().gray();
     let label1 = format!(" {}", state.name);
     to.blit(&label1, x + 1, y, Some(style.white().bold()));
diff --git a/src/pool.rs b/src/pool.rs
index da64d8d6..146cae07 100644
--- a/src/pool.rs
+++ b/src/pool.rs
@@ -115,7 +115,7 @@ input_to_command!(PoolCommand:<Tui>|state: PoolModel,input|match state.phrases_m
     _ => to_phrases_command(state, input)?
 });
 
-fn to_phrases_command (state: &PoolModel, input: &TuiInput) -> Option<PoolCommand> {
+fn to_phrases_command (state: &PoolModel, input: &TuiIn) -> Option<PoolCommand> {
     use KeyCode::{Up, Down, Delete, Char};
     use PoolCommand as Cmd;
     let index = state.phrase_index();
diff --git a/src/pool/phrase_rename.rs b/src/pool/phrase_rename.rs
index 55d96c11..313b4ce0 100644
--- a/src/pool/phrase_rename.rs
+++ b/src/pool/phrase_rename.rs
@@ -35,7 +35,7 @@ impl Command<PoolModel> for PhraseRenameCommand {
 }
 
 impl InputToCommand<Tui, PoolModel> for PhraseRenameCommand {
-    fn input_to_command (state: &PoolModel, from: &TuiInput) -> Option<Self> {
+    fn input_to_command (state: &PoolModel, from: &TuiIn) -> Option<Self> {
         use KeyCode::{Char, Backspace, Enter, Esc};
         if let Some(PoolMode::Rename(_, ref old_name)) = state.phrases_mode() {
             Some(match from.event() {
diff --git a/src/sampler/sample_import.rs b/src/sampler/sample_import.rs
index a2505b40..045825a5 100644
--- a/src/sampler/sample_import.rs
+++ b/src/sampler/sample_import.rs
@@ -153,7 +153,7 @@ fn scan (dir: &PathBuf) -> Usually<(Vec<OsString>, Vec<OsString>)> {
 }
 
 fn draw_sample (
-    to: &mut TuiOutput, x: u16, y: u16, note: Option<&u7>, sample: &Sample, focus: bool
+    to: &mut TuiOut, x: u16, y: u16, note: Option<&u7>, sample: &Sample, focus: bool
 ) -> Usually<usize> {
     let style = if focus { Style::default().green() } else { Style::default() };
     if focus {
@@ -171,7 +171,7 @@ fn draw_sample (
 }
 
 impl Content<Tui> for AddSampleModal {
-    fn render (&self, to: &mut TuiOutput) {
+    fn render (&self, to: &mut TuiOut) {
         todo!()
         //let area = to.area();
         //to.make_dim();
@@ -208,7 +208,7 @@ impl Content<Tui> for AddSampleModal {
 }
 
 //impl Handle<Tui> for AddSampleModal {
-    //fn handle (&mut self, from: &TuiInput) -> Perhaps<bool> {
+    //fn handle (&mut self, from: &TuiIn) -> Perhaps<bool> {
         //if from.handle_keymap(self, KEYMAP_ADD_SAMPLE)? {
             //return Ok(Some(true))
         //}
diff --git a/src/style.rs b/src/style.rs
index 58a977a0..46ecaf8c 100644
--- a/src/style.rs
+++ b/src/style.rs
@@ -26,7 +26,7 @@ impl<W: Content<Tui>> Content<Tui> for Bold<W> {
     fn content (&self) -> impl Content<Tui> {
         Some(&self.1)
     }
-    fn render (&self, to: &mut TuiOutput) {
+    fn render (&self, to: &mut TuiOut) {
         to.fill_bold(to.area(), self.0);
         self.1.render(to)
     }
@@ -38,7 +38,7 @@ impl<W: Content<Tui>> Content<Tui> for Foreground<W> {
     fn content (&self) -> impl Content<Tui> {
         Some(&self.1)
     }
-    fn render (&self, to: &mut TuiOutput) {
+    fn render (&self, to: &mut TuiOut) {
         to.fill_fg(to.area(), self.0);
         self.1.render(to)
     }
@@ -50,7 +50,7 @@ impl<W: Content<Tui>> Content<Tui> for Background<W> {
     fn content (&self) -> impl Content<Tui> {
         Some(&self.1)
     }
-    fn render (&self, to: &mut TuiOutput) {
+    fn render (&self, to: &mut TuiOut) {
         to.fill_bg(to.area(), self.0);
         self.1.render(to)
     }
@@ -62,7 +62,7 @@ impl Content<Tui> for Styled<&str> {
     fn content (&self) -> impl Content<Tui> {
         Some(&self.1)
     }
-    fn render (&self, to: &mut TuiOutput) {
+    fn render (&self, to: &mut TuiOut) {
         // FIXME
         let [x, y, ..] = to.area();
         //let [w, h] = self.min_size(to.area().wh())?.unwrap();
diff --git a/src/transport.rs b/src/transport.rs
index 31261647..20254ca8 100644
--- a/src/transport.rs
+++ b/src/transport.rs
@@ -180,12 +180,12 @@ command!(|self:TransportCommand,state:TransportTui|match self {
     //Ok(None)
 //});
 impl InputToCommand<Tui, TransportTui> for TransportCommand {
-    fn input_to_command (state: &TransportTui, input: &TuiInput) -> Option<Self> {
+    fn input_to_command (state: &TransportTui, input: &TuiIn) -> Option<Self> {
         to_transport_command(state, input)
             .or_else(||to_focus_command(input).map(TransportCommand::Focus))
     }
 }
-pub fn to_transport_command <T, U> (state: &T, input: &TuiInput) -> Option<TransportCommand>
+pub fn to_transport_command <T, U> (state: &T, input: &TuiIn) -> Option<TransportCommand>
 where
     T: TransportControl<U>,
     U: Into<Option<TransportFocus>>,
@@ -228,7 +228,7 @@ where
         }
     })
 }
-fn to_bpm_command (input: &TuiInput, bpm: f64) -> Option<TransportCommand> {
+fn to_bpm_command (input: &TuiIn, bpm: f64) -> Option<TransportCommand> {
     Some(match input.event() {
         key_pat!(Char(',')) => Clock(SetBpm(bpm - 1.0)),
         key_pat!(Char('.')) => Clock(SetBpm(bpm + 1.0)),
@@ -237,7 +237,7 @@ fn to_bpm_command (input: &TuiInput, bpm: f64) -> Option<TransportCommand> {
         _ => return None,
     })
 }
-fn to_quant_command (input: &TuiInput, quant: &Quantize) -> Option<TransportCommand> {
+fn to_quant_command (input: &TuiIn, quant: &Quantize) -> Option<TransportCommand> {
     Some(match input.event() {
         key_pat!(Char(',')) => Clock(SetQuant(quant.prev())),
         key_pat!(Char('.')) => Clock(SetQuant(quant.next())),
@@ -246,7 +246,7 @@ fn to_quant_command (input: &TuiInput, quant: &Quantize) -> Option<TransportComm
         _ => return None,
     })
 }
-fn to_sync_command (input: &TuiInput, sync: &LaunchSync) -> Option<TransportCommand> {
+fn to_sync_command (input: &TuiIn, sync: &LaunchSync) -> Option<TransportCommand> {
     Some(match input.event() {
         key_pat!(Char(',')) => Clock(SetSync(sync.prev())),
         key_pat!(Char('.')) => Clock(SetSync(sync.next())),
@@ -255,7 +255,7 @@ fn to_sync_command (input: &TuiInput, sync: &LaunchSync) -> Option<TransportComm
         _ => return None,
     })
 }
-fn to_seek_command (input: &TuiInput) -> Option<TransportCommand> {
+fn to_seek_command (input: &TuiIn) -> Option<TransportCommand> {
     Some(match input.event() {
         key_pat!(Char(',')) => todo!("transport seek bar"),
         key_pat!(Char('.')) => todo!("transport seek bar"),