diff --git a/playground/TODO.md b/playground/TODO.md
index 9668543..e83ce45 100644
--- a/playground/TODO.md
+++ b/playground/TODO.md
@@ -8,6 +8,8 @@
 - [x] tabs for source, compiler output
 - [x] Show errors in editor
 - [x] show tabs on rhs
-  - [ ] editor is a tab on mobile
-- [ ] publish / host on github
-- [ ] multiple files
+  - [ ] make editor a tab on mobile
+    - (or possibly put the tab bar under the keyboard)
+- [x] publish / host on github
+- [ ] multiple persistent files
+- [x] kill return for autocomplete
diff --git a/playground/samples/Day1.newt b/playground/samples/Day1.newt
index c02c6ff..a291ddf 100644
--- a/playground/samples/Day1.newt
+++ b/playground/samples/Day1.newt
@@ -1,6 +1,5 @@
 module Day1
 
--- Need to visit Lib.newt for this to work in playground
 import Lib
 
 digits1 : List Char -> List Int
diff --git a/playground/samples/Day2.newt b/playground/samples/Day2.newt
index 176063b..7e2cbde 100644
--- a/playground/samples/Day2.newt
+++ b/playground/samples/Day2.newt
@@ -1,6 +1,5 @@
 module Day2
 
--- Need to visit Lib.newt for this to work in playground
 import Lib
 
 Draw : U
diff --git a/playground/samples/Tree.newt b/playground/samples/Tree.newt
index 2594a8e..7d98c62 100644
--- a/playground/samples/Tree.newt
+++ b/playground/samples/Tree.newt
@@ -73,7 +73,6 @@ TooBig l u h = Sg Nat (\ x => T23 l (N x) h * T23 (N x) u h)
 
 insert : {h : Nat} {l u : Bnd} -> Intv l u -> T23 l u h -> TooBig l u h + T23 l u h
 -- Agda is yellow here, needs h = x on each leaf
--- The second arg to the second _,_ is unsolved and pi-typed
 insert (intv x lx xu) (leaf lu) = inl (x , (leaf {_} {_} {x} lx , leaf {_} {_} {x} xu))
 insert (intv x lx xu) (node2 y tly tyu) = case cmp x y of
   -- u := N y is not solved at this time
diff --git a/playground/src/main.ts b/playground/src/main.ts
index a7d9ccb..3b702eb 100644
--- a/playground/src/main.ts
+++ b/playground/src/main.ts
@@ -74,6 +74,7 @@ function Editor({ initialValue }: EditorProps) {
       language: "newt",
       theme: "vs",
       automaticLayout: true,
+      acceptSuggestionOnEnter: "off",
       unicodeHighlight: { ambiguousCharacters: false },
       minimap: { enabled: false },
     });
diff --git a/playground/src/worker.ts b/playground/src/worker.ts
index 1b769f1..2cd2b3a 100644
--- a/playground/src/worker.ts
+++ b/playground/src/worker.ts
@@ -64,9 +64,7 @@ let shim: any = {
       let buf2 = new TextEncoder().encode(line);
       handle.buf =  Buffer.concat([handle.buf, buf2])
     },
-    chmodSync(fn: string, mode: number) {
-      console.log('chmod', fn, mode)
-    },
+    chmodSync(fn: string, mode: number) { },
     readSync(fd: number, buf: Buffer, start: number, len: number) {
       let hand = fds[fd];
       let avail = hand.buf.byteLength - hand.pos;
@@ -118,8 +116,18 @@ let stdout = ''
 process.stdout.write = (s) => {
   stdout += s
 };
+// hack for now
+const preload = ["Lib.newt"]
+onmessage = async function (e) {
+  for (let fn of preload) {
 
-onmessage = function (e) {
+    if (!files['src/'+fn]) {
+      console.log('preload', fn)
+      let res = await fetch(fn)
+      let text = await res.text()
+      files['src/'+fn] = text
+    }
+  }
   let {src} = e.data
   let module = 'Main'
   let m = src.match(/module (\w+)/)