diff --git a/CHANGELOG.md b/CHANGELOG.md
index 651c1b8..b6e086f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,9 +5,7 @@ Game store page: https://crispypin.itch.io/marble-machinations
 ### added
 - create "missing levels" section allowing access to solutions to levels that are no longer available
 - click to collapse chapters in level list
-- input bindings for eraser (X), selection (B), blueprint list (Ctrl B), no tool (no default binding)
 ### fixed
-- when start and stop are bound to the same thing (as by default), only start works
 - When two input bindings had the same trigger but one has a strict subset of the others modifiers, both would activate when the one with more modifiers was pressed. For example (Ctrl+S -> Save) would also trigger (S -> Wire Tool). Now, Shift+S will still trigger Wire Tool, unless Shift+S (or eg. Shift+Ctrl+S) is bound to something else.
 
 ## v0.3.1 - 2025-04-05
@@ -18,7 +16,7 @@ Game store page: https://crispypin.itch.io/marble-machinations
 ### added
 - score number: bounding area
 - configurable key bindings for many editor actions
-- QWERTY+ASDFGH key bindings for the tile tools by default
+- QWERTY+ASDFGH keybindings for the tile tools by default
 - OS clipboard copy/paste, with fallback to old behavior when copying
 - cut selection
 - in-grid text comments (not yet editable in-game)
diff --git a/src/editor.rs b/src/editor.rs
index f8fa6a1..4db5372 100644
--- a/src/editor.rs
+++ b/src/editor.rs
@@ -478,25 +478,22 @@ impl Editor {
 		if globals.is_pressed(ActionId::StepSim) {
 			self.step_pressed()
 		}
-		match self.sim_state {
-			SimState::Editing => {
-				if globals.is_pressed(ActionId::StartSim) {
+		if globals.is_pressed(ActionId::StartSim) {
+			match self.sim_state {
+				SimState::Editing => {
 					self.init_sim();
 					self.sim_state = SimState::Running;
 				}
+				SimState::Stepping => self.sim_state = SimState::Running,
+				SimState::Running => (),
 			}
-			SimState::Stepping => {
-				if globals.is_pressed(ActionId::StartSim) {
-					self.sim_state = SimState::Running
-				} else if globals.is_pressed(ActionId::StopSim) {
+		} else if globals.is_pressed(ActionId::StopSim) {
+			match self.sim_state {
+				SimState::Running | SimState::Stepping => {
 					self.sim_state = SimState::Editing;
 					self.popup = Popup::None;
 				}
-			}
-			SimState::Running => {
-				if globals.is_pressed(ActionId::StopSim) {
-					self.sim_state = SimState::Editing;
-				}
+				SimState::Editing => (),
 			}
 		}
 
@@ -1063,7 +1060,7 @@ impl Editor {
 
 			self.tooltip.add(276, y, 40, 40, "Delete");
 			if simple_button((d, &self.mouse), 276, y, 40, 40)
-				|| globals.is_pressed(ActionId::EraseSelection)
+				|| globals.is_pressed(ActionId::Erase)
 			{
 				erase_selection = true;
 			}
@@ -1094,7 +1091,7 @@ impl Editor {
 		                       texture: &str,
 		                       tooltip: &'static str,
 		                       tool_option: Tool,
-		                       action: ActionId| {
+		                       action: Option<ActionId>| {
 			let border = 4.;
 			let gap = 2.;
 			let button_size = 32. + border * 2.;
@@ -1114,26 +1111,20 @@ impl Editor {
 				tool_option,
 				&mut self.active_tool,
 				border,
-				globals.is_pressed(action),
+				action.map(|a| globals.is_pressed(a)).unwrap_or(false),
 			)
 		};
-		tool_button((0, -2), "eraser", "Eraser", Tool::Erase, ActionId::Eraser);
+		tool_button((0, -2), "eraser", "Eraser", Tool::Erase, None);
 		tool_button(
 			(1, -2),
 			"selection",
 			"Select",
 			Tool::SelectArea(Selection::default()),
-			ActionId::Selection,
+			None,
 		);
 
-		tool_button(
-			(0, -1),
-			"blueprint",
-			"Blueprints",
-			Tool::Blueprint,
-			ActionId::Blueprints,
-		);
-		tool_button((1, -1), "transparent", "None", Tool::None, ActionId::NoTool);
+		tool_button((0, -1), "blueprint", "Blueprints", Tool::Blueprint, None);
+		tool_button((1, -1), "transparent", "None", Tool::None, None);
 
 		if !hide_tile_tools {
 			tool_button(
@@ -1141,42 +1132,42 @@ impl Editor {
 				"block",
 				"Block",
 				Tool::SetTile(Tile::from_char('#')),
-				ActionId::TileBlock,
+				Some(ActionId::TileBlock),
 			);
 			tool_button(
 				(0, 1),
 				"silo_off",
 				"Silo",
 				Tool::SetTile(Tile::from_char('B')),
-				ActionId::TileSilo,
+				Some(ActionId::TileSilo),
 			);
 			tool_button(
 				(0, 2),
 				"button_off",
 				"Button",
 				Tool::SetTile(Tile::from_char('*')),
-				ActionId::TileButton,
+				Some(ActionId::TileButton),
 			);
 			tool_button(
 				(0, 3),
 				"io_tile_off",
 				"Input/Output silo",
 				Tool::SetTile(Tile::from_char('I')),
-				ActionId::TileIOSilo,
+				Some(ActionId::TileIOSilo),
 			);
 			tool_button(
 				(0, 4),
 				"flipper_off",
 				"Flipper",
 				Tool::SetTile(Tile::from_char('F')),
-				ActionId::TileFlipper,
+				Some(ActionId::TileFlipper),
 			);
 			tool_button(
 				(0, 5),
 				"digit_tool",
 				"Digit",
 				Tool::Digits(None),
-				ActionId::TileDigit,
+				Some(ActionId::TileDigit),
 			);
 
 			tool_button(
@@ -1184,14 +1175,14 @@ impl Editor {
 				"marble",
 				"Marble",
 				Tool::SetTile(Tile::from_char('o')),
-				ActionId::TileMarble,
+				Some(ActionId::TileMarble),
 			);
 			match tool_button(
 				(1, 1),
 				self.tool_wire.texture_name_off(),
 				self.tool_wire.human_name(),
 				Tool::Wire,
-				ActionId::TileGroupWire,
+				Some(ActionId::TileGroupWire),
 			) {
 				Some(Scroll::Down) => self.tool_wire.next(),
 				Some(Scroll::Up) => self.tool_wire.prev(),
@@ -1203,7 +1194,7 @@ impl Editor {
 				self.tool_arrow.arrow_tile_texture_name(),
 				self.tool_arrow.arrow_tile_human_name(),
 				Tool::Arrow,
-				ActionId::TileGroupArrow,
+				Some(ActionId::TileGroupArrow),
 			) {
 				Some(Scroll::Down) => self.tool_arrow = self.tool_arrow.right(),
 				Some(Scroll::Up) => self.tool_arrow = self.tool_arrow.left(),
@@ -1214,7 +1205,7 @@ impl Editor {
 				self.tool_mirror.texture_name(),
 				self.tool_mirror.human_name(),
 				Tool::Mirror,
-				ActionId::TileGroupMirror,
+				Some(ActionId::TileGroupMirror),
 			)
 			.is_some()
 			{
@@ -1225,7 +1216,7 @@ impl Editor {
 				self.tool_math.texture_name_off(),
 				self.tool_math.human_name(),
 				Tool::Math,
-				ActionId::TileGroupMath,
+				Some(ActionId::TileGroupMath),
 			) {
 				Some(Scroll::Down) => self.tool_math.next(),
 				Some(Scroll::Up) => self.tool_math.prev(),
@@ -1236,7 +1227,7 @@ impl Editor {
 				self.tool_comparator.texture_name_off(),
 				self.tool_comparator.human_name(),
 				Tool::Comparator,
-				ActionId::TileGroupCompare,
+				Some(ActionId::TileGroupCompare),
 			) {
 				Some(Scroll::Down) => self.tool_comparator.next(),
 				Some(Scroll::Up) => self.tool_comparator.prev(),
diff --git a/src/input.rs b/src/input.rs
index 6ad84c6..bc4241b 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -23,7 +23,7 @@ pub enum ActionId {
 	Copy,
 	Cut,
 	Paste,
-	EraseSelection,
+	Erase,
 	ToggleMenu,
 	Save,
 	StartSim,
@@ -32,10 +32,6 @@ pub enum ActionId {
 	CycleGroup,
 	CycleGroupRevMod,
 
-	Eraser,
-	Selection,
-	Blueprints,
-	NoTool,
 	TileBlock,
 	TileSilo,
 	TileButton,
@@ -69,7 +65,7 @@ impl Default for Input {
 		bind_key(ActionId::Copy, vec![LCtrl], C);
 		bind_key(ActionId::Cut, vec![LCtrl], X);
 		bind_key(ActionId::Paste, vec![LCtrl], V);
-		bind_key(ActionId::EraseSelection, vec![], Backspace);
+		bind_key(ActionId::Erase, vec![], Backspace);
 		bind_key(ActionId::ToggleMenu, vec![], Escape);
 		bind_key(ActionId::Save, vec![LCtrl], S);
 		bind_key(ActionId::StartSim, vec![], Enter);
@@ -77,9 +73,6 @@ impl Default for Input {
 		bind_key(ActionId::StepSim, vec![], Space);
 		bind_key(ActionId::CycleGroup, vec![], Tab);
 		bind_key(ActionId::CycleGroupRevMod, vec![], LShift);
-		bind_key(ActionId::Eraser, vec![], X);
-		bind_key(ActionId::Blueprints, vec![LCtrl], B);
-		bind_key(ActionId::Selection, vec![], B);
 		bind_key(ActionId::TileBlock, vec![], Q);
 		bind_key(ActionId::TileSilo, vec![], W);
 		bind_key(ActionId::TileButton, vec![], E);