diff --git a/crates/app/app.rs b/crates/app/app.rs
index b371a796..9731d67e 100644
--- a/crates/app/app.rs
+++ b/crates/app/app.rs
@@ -41,11 +41,6 @@ use std::fmt::Write;
 use ::tengri::tui::ratatui::prelude::Position;
 use xdg::BaseDirectories;
 mod app_dsl;  pub use self::app_dsl::*;
-macro_rules!dsl_sym(
-    (|$state:ident:$State:ty| -> $type:ty {$($lit:literal => $exp:expr),* $(,)?})=>{
-        impl<'t> DslSymNs<'t, $type> for $State {
-            const NS: DslNs<'t, fn (&'t $State)->$type> =
-                DslNs(&[$(($lit, |$state: &$State|$exp)),*]); } });
 mod app_view; pub use self::app_view::*;
 mod app_ctrl; pub use self::app_ctrl::*;
 mod app_jack; pub use self::app_jack::*;
diff --git a/crates/app/app_ctrl.rs b/crates/app/app_ctrl.rs
index b24dc862..a1240359 100644
--- a/crates/app/app_ctrl.rs
+++ b/crates/app/app_ctrl.rs
@@ -1,4 +1,6 @@
 use crate::*;
+#[derive(Debug)]
+pub enum AppCommand {}
 handle!(TuiIn:|self: App, input|{
     panic!("{input:?}");
     //Ok(if let Some(binding) = self.profile.as_ref()
@@ -12,7 +14,7 @@ handle!(TuiIn:|self: App, input|{
     //} else {
         //None
     //})
-})
+});
 dsl_sym!(|app: App| -> isize {
     ":_isize_stub" => -1
 });
@@ -70,91 +72,108 @@ dsl_sym!(|app: App| -> Selection {
 });
 dsl_sym!(|app: App| -> Option<u7> {
     ":editor/pitch" => Some((app.editor().as_ref().map(|e|e.get_note_pos()).unwrap() as u8).into())
-})
+});
 dsl_sym!(|app: App| -> Option<usize> {
     ":selected/scene" => app.selection().scene(),
     ":selected/track" => app.selection().track(),
 });
 dsl_sym!(|app: App| -> Option<Arc<RwLock<MidiClip>>> {
     ":selected/clip" => if let Selection::TrackClip { track, scene } = app.selection() {
-        app.scenes()[*scene].clips[*track].clone(),
+        app.scenes()[*scene].clips[*track].clone()
     } else {
         None
     }
 });
-dsl_bind!(AppCommand: App {
-    enqueue  = |app, clip:  Option<Arc<RwLock<MidiClip>>>| { todo!() };
-    history  = |app, delta: isize| { todo!() };
-    zoom     = |app, zoom:  usize| { todo!() };
-    stop_all = |app| { app.tracks_stop_all(); Ok(None) };
-    //dialog   = |app, command: DialogCommand|
-        //Ok(command.delegate(&mut app.dialog, |c|Self::Dialog{command: c})?);
-    project  = |app, command: ArrangementCommand|
-        Ok(command.delegate(&mut app.project, |c|Self::Project{command: c})?);
-    clock    = |app, command: ClockCommand|
-        Ok(command.execute(app.clock_mut())?.map(|c|Self::Clock{command: c}));
-    sampler  = |app, command: SamplerCommand|
-        Ok(app.project.sampler_mut().map(|s|command.delegate(s, |command|Self::Sampler{command}))
-            .transpose()?.flatten());
-    pool     = |app, command: PoolCommand| {
-        let undo = command.clone().delegate(&mut app.pool, |command|AppCommand::Pool{command})?;
-        // update linked editor after pool action
-        match command {
-            // autoselect: automatically load selected clip in editor
-            PoolCommand::Select { .. } |
-            // autocolor: update color in all places simultaneously
-            PoolCommand::Clip { command: PoolClipCommand::SetColor { .. } } => {
-                let clip = app.pool.clip().clone();
-                app.editor_mut().map(|editor|editor.set_clip(clip.as_ref()))
-            },
-            _ => None
-        };
-        Ok(undo)
-    };
-    select   = |app, selection: Selection| {
-        *app.project.selection_mut() = selection;
-        //todo!
-        //if let Some(ref mut editor) = app.editor_mut() {
-            //editor.set_clip(match selection {
-                //Selection::TrackClip { track, scene } if let Some(Some(Some(clip))) = app
-                    //.project
-                    //.scenes.get(scene)
-                    //.map(|s|s.clips.get(track))
-                //=>
-                    //Some(clip),
-                //_ =>
-                    //None
-            //});
-        //}
-        Ok(None)
-        //("select"  [t: usize, s: usize] Some(match (t.expect("no track"), s.expect("no scene")) {
-            //(0, 0) => Self::Select(Selection::Mix),
-            //(t, 0) => Self::Select(Selection::Track(t)),
-            //(0, s) => Self::Select(Selection::Scene(s)),
-            //(t, s) => Self::Select(Selection::TrackClip { track: t, scene: s }) })))
-        // autoedit: load focused clip in editor.
-    };
-    //fn color (app: &mut App, theme: ItemTheme) -> Perhaps<Self> {
-        //Ok(app.set_color(Some(theme)).map(|theme|Self::Color{theme}))
-    //}
-    //fn launch (app: &mut App) -> Perhaps<Self> {
-        //app.project.launch();
-        //Ok(None)
-    //}
-    toggle_editor = |app, value: bool|{ app.toggle_editor(Some(value)); Ok(None) };
-    editor = |app, command: MidiEditCommand| Ok(if let Some(editor) = app.editor_mut() {
-        let undo = command.clone().delegate(editor, |command|AppCommand::Editor{command})?;
-        // update linked sampler after editor action
-        app.project.sampler_mut().map(|sampler|match command {
-            // autoselect: automatically select sample in sampler
-            MidiEditCommand::SetNotePos { pos } => { sampler.set_note_pos(pos); },
-            _ => {}
-        });
-        undo
-    } else {
-        None
-    });
+dsl_exp!(|app: App| -> AppCommand {
+    ["stop-all"] => app.project.stop_all(),
+    ["enqueue", clip?: Option<Arc<RwLock<MidiClip>>>] => todo!(),
+    ["history", delta: isize]                 => todo!(),
+    ["zoom",    zoom:  usize]                 => todo!(),
+    ["select",  selection: Selection]         => todo!(),
+    ["dialog"  / command: DialogCommand]      => todo!(),
+    ["project" / command: ArrangementCommand] => todo!(),
+    ["clock"   / command: ClockCommand]       => todo!(),
+    ["sampler" / command: SamplerCommand]     => todo!(),
+    ["pool"    / command: PoolCommand]        => todo!(),
 });
+dsl_exp!(|app: App| -> DialogCommand {});
+dsl_exp!(|app: App| -> ArrangementCommand {});
+dsl_exp!(|app: App| -> ClockCommand {});
+dsl_exp!(|app: App| -> SamplerCommand {});
+dsl_exp!(|app: App| -> PoolCommand {});
+//dsl_bind!(AppCommand: App {
+    //enqueue  = |app, clip:  Option<Arc<RwLock<MidiClip>>>| { todo!() };
+    //history  = |app, delta: isize| { todo!() };
+    //zoom     = |app, zoom:  usize| { todo!() };
+    //stop_all = |app| { app.tracks_stop_all(); Ok(None) };
+    ////dialog   = |app, command: DialogCommand|
+        ////Ok(command.delegate(&mut app.dialog, |c|Self::Dialog{command: c})?);
+    //project  = |app, command: ArrangementCommand|
+        //Ok(command.delegate(&mut app.project, |c|Self::Project{command: c})?);
+    //clock    = |app, command: ClockCommand|
+        //Ok(command.execute(app.clock_mut())?.map(|c|Self::Clock{command: c}));
+    //sampler  = |app, command: SamplerCommand|
+        //Ok(app.project.sampler_mut().map(|s|command.delegate(s, |command|Self::Sampler{command}))
+            //.transpose()?.flatten());
+    //pool     = |app, command: PoolCommand| {
+        //let undo = command.clone().delegate(&mut app.pool, |command|AppCommand::Pool{command})?;
+        //// update linked editor after pool action
+        //match command {
+            //// autoselect: automatically load selected clip in editor
+            //PoolCommand::Select { .. } |
+            //// autocolor: update color in all places simultaneously
+            //PoolCommand::Clip { command: PoolClipCommand::SetColor { .. } } => {
+                //let clip = app.pool.clip().clone();
+                //app.editor_mut().map(|editor|editor.set_clip(clip.as_ref()))
+            //},
+            //_ => None
+        //};
+        //Ok(undo)
+    //};
+    //select   = |app, selection: Selection| {
+        //*app.project.selection_mut() = selection;
+        ////todo!
+        ////if let Some(ref mut editor) = app.editor_mut() {
+            ////editor.set_clip(match selection {
+                ////Selection::TrackClip { track, scene } if let Some(Some(Some(clip))) = app
+                    ////.project
+                    ////.scenes.get(scene)
+                    ////.map(|s|s.clips.get(track))
+                ////=>
+                    ////Some(clip),
+                ////_ =>
+                    ////None
+            ////});
+        ////}
+        //Ok(None)
+        ////("select"  [t: usize, s: usize] Some(match (t.expect("no track"), s.expect("no scene")) {
+            ////(0, 0) => Self::Select(Selection::Mix),
+            ////(t, 0) => Self::Select(Selection::Track(t)),
+            ////(0, s) => Self::Select(Selection::Scene(s)),
+            ////(t, s) => Self::Select(Selection::TrackClip { track: t, scene: s }) })))
+        //// autoedit: load focused clip in editor.
+    //};
+    ////fn color (app: &mut App, theme: ItemTheme) -> Perhaps<Self> {
+        ////Ok(app.set_color(Some(theme)).map(|theme|Self::Color{theme}))
+    ////}
+    ////fn launch (app: &mut App) -> Perhaps<Self> {
+        ////app.project.launch();
+        ////Ok(None)
+    ////}
+    //toggle_editor = |app, value: bool|{ app.toggle_editor(Some(value)); Ok(None) };
+    //editor = |app, command: MidiEditCommand| Ok(if let Some(editor) = app.editor_mut() {
+        //let undo = command.clone().delegate(editor, |command|AppCommand::Editor{command})?;
+        //// update linked sampler after editor action
+        //app.project.sampler_mut().map(|sampler|match command {
+            //// autoselect: automatically select sample in sampler
+            //MidiEditCommand::SetNotePos { pos } => { sampler.set_note_pos(pos); },
+            //_ => {}
+        //});
+        //undo
+    //} else {
+        //None
+    //});
+//});
 //take!(ClockCommand       |state: App, iter|Take::take(state.clock(), iter));
 //take!(MidiEditCommand    |state: App, iter|Ok(state.editor().map(|x|Take::take(x, iter)).transpose()?.flatten()));
 //take!(PoolCommand        |state: App, iter|Take::take(&state.pool, iter));
diff --git a/crates/app/app_dsl.rs b/crates/app/app_dsl.rs
index 21a1be6d..745da9a6 100644
--- a/crates/app/app_dsl.rs
+++ b/crates/app/app_dsl.rs
@@ -1,19 +1,24 @@
 use crate::*;
 
-macro_rules!dsl_sym(
+pub struct DslNs<'t, T: 't>(pub &'t [(&'t str, T)]);
+
+pub trait DslSymNs<'t, T: 't>: 't { const NS: DslNs<'t, fn (&'t Self)->T>; }
+#[macro_export] macro_rules! dsl_sym (
     (|$state:ident:$State:ty| -> $type:ty {$($lit:literal => $exp:expr),* $(,)?})=>{
         impl<'t> DslSymNs<'t, $type> for $State {
             const NS: DslNs<'t, fn (&'t $State)->$type> =
                 DslNs(&[$(($lit, |$state: &$State|$exp)),*]); } });
 
-pub trait DslSymNs<'t, T: 't>: 't {
-    const NS: DslNs<'t, fn (&'t Self)->T>;
-}
-
-pub struct DslNs<'t, T: 't>(pub &'t [(&'t str, T)]);
+pub trait DslExpNs<'t, T: 't>: 't { const NS: DslNs<'t, fn (&'t Self, &str)->T>; }
+#[macro_export] macro_rules! dsl_exp (
+    (|$state:ident:$State:ty|->$type:ty { $(
+        [$key:literal $(/ $sub:ident: $Sub:ty)? $(, $arg:ident $(?)? :$argtype:ty)*] => $body:expr
+    ),* $(,)? }) => {
+        impl<'t> DslExpNs<'t, $type> for $State {
+            const NS: DslNs<'t, fn (&'t $State, &str)->$type> =
+                DslNs(&[]); } });
 
 pub type DslCb = fn (&App) -> Box<dyn Render<TuiOut>>;
-
 impl<'t, D: Dsl> std::ops::Index<D> for DslNs<'t, DslCb> {
     type Output = DslCb;
     fn index (&self, index: D) -> &Self::Output {