diff --git a/src/cmd.js b/src/cmd.js
index b643c9e..dc62c61 100644
--- a/src/cmd.js
+++ b/src/cmd.js
@@ -255,6 +255,10 @@ const external_imports_loaded = (
   }
 }
 
+// TODO refactor, make index controlled property and get it from state instead
+// of setting to zero
+const rerun_code = state => run_code(state, 0)
+
 const input = (state, code, index) => {
   const files = {...state.files, [state.current_module]: code}
   const next = run_code({...state, files}, index, [state.current_module])
@@ -785,6 +789,7 @@ export const get_initial_state = state => {
 
 export const COMMANDS = {
   input, 
+  rerun_code,
   load_dir,
   create_file,
   step_into,
diff --git a/src/index.js b/src/index.js
index d5fdd56..69cb806 100644
--- a/src/index.js
+++ b/src/index.js
@@ -26,6 +26,7 @@ export const open_run_window = () => {
     globalThis.run_window.close()
   }
   globalThis.run_window = open('about:blank')
+  exec('rerun_code')
 }
 
 const read_modules = async () => {