diff --git a/TODO b/TODO
index 25f14a3..400cb82 100644
--- a/TODO
+++ b/TODO
@@ -1,9 +1,5 @@
-- arithmatic
+- finish event listener:
 
-- path to event listener:
-
-  - rerender w/ a signal to branch into handler
-  - capture correct position information in script blocks
   - card fields (vars maybe not needed yet?)
     - set field command
       - buffer output/side-effects in VM
@@ -11,6 +7,11 @@
         - unit test
       - command
       - set field inline instead of separate data???
+  - capture correct position information in script blocks
+
+- arithmatic
+
+- if blocks
 
 - impl vars
 
diff --git a/src/3x5.ts b/src/3x5.ts
index 3ee6081..3934999 100644
--- a/src/3x5.ts
+++ b/src/3x5.ts
@@ -50,7 +50,9 @@ fieldInput.value = String.raw`
 title "Hello, World!"
 `.trim();
 
-const codeInput = document.createElement("textarea");
+const codeInput = Object.assign(document.createElement("textarea"), {
+  oninput: render,
+});
 Object.assign(codeInput.style, TEXTAREA_STYLE, { height: "20em" });
 codeInput.value = String.raw`
 h1 [get title]
@@ -99,10 +101,6 @@ para {
 }
 `.trim();
 
-const rerender = Object.assign(document.createElement("button"), {
-  onclick: () => render(),
-  textContent: "Render",
-});
 const state = document.createElement("pre");
 const display = document.createElement("blockquote");
 const debugDisplay = document.createElement("pre");
@@ -164,14 +162,7 @@ function triggerEvent(handlerPos: number) {
 }
 
 render();
-document.body.append(
-  fieldInput,
-  codeInput,
-  rerender,
-  display,
-  state,
-  debugDisplay
-);
+document.body.append(fieldInput, codeInput, display, state, debugDisplay);
 
 RegisterJumpHere(codeInput);
 RegisterButtonOnClick(triggerEvent);