diff --git a/index.html b/index.html
index 0eef48f..4ead059 100644
--- a/index.html
+++ b/index.html
@@ -39,6 +39,7 @@
 			</p>
 			<p id="examples">
 				Load <a href="#--111100">example 1</a>, <a href="#-1111000-1-01---">example 2</a>, <a href="#11101111111111111111101111111101">example 3</a>.
+				Set all cells to <button id="set-0">0</button>, <button id="set-1">1</button> or <button id="set-any">-</button>.
 			</p>
 			<div id="input-container"></div>
 			<div><label>Generate: <select id="mode-select">
diff --git a/src/bin/svg-wasm.rs b/src/bin/svg-wasm.rs
index 675baa5..7bdbb5b 100644
--- a/src/bin/svg-wasm.rs
+++ b/src/bin/svg-wasm.rs
@@ -158,6 +158,18 @@ fn set_var_number(x: usize) {
 }
 
 fn init_settings() {
+	let set0 = web!(document).get_element_by_id("set-0").unwrap().unchecked_into::<EventTarget>();
+	let closure = Closure::wrap(Box::new(|| set_input_function(&"0".repeat(2usize.pow(get_var_number() as u32)))) as Box<dyn FnMut()>);
+	set0.add_event_listener_with_callback("click", closure.as_ref().unchecked_ref()).unwrap();
+	closure.forget();
+	let set1 = web!(document).get_element_by_id("set-1").unwrap().unchecked_into::<EventTarget>();
+	let closure = Closure::wrap(Box::new(|| set_input_function(&"1".repeat(2usize.pow(get_var_number() as u32)))) as Box<dyn FnMut()>);
+	set1.add_event_listener_with_callback("click", closure.as_ref().unchecked_ref()).unwrap();
+	closure.forget();
+	let seta = web!(document).get_element_by_id("set-any").unwrap().unchecked_into::<EventTarget>();
+	let closure = Closure::wrap(Box::new(|| set_input_function(&"-".repeat(2usize.pow(get_var_number() as u32)))) as Box<dyn FnMut()>);
+	seta.add_event_listener_with_callback("click", closure.as_ref().unchecked_ref()).unwrap();
+	closure.forget();
 	let calculate = web!(document).get_element_by_id("calculate").unwrap().unchecked_into::<EventTarget>();
 	let closure = Closure::wrap(Box::new(|| run()) as Box<dyn FnMut()>);
 	calculate.add_event_listener_with_callback("click", closure.as_ref().unchecked_ref()).unwrap();