M web/assets/styles.css → web/assets/styles.css

@@ -78,7 +78,7 @@ border: 1px solid lime;
 }
 
 article > section > section {
-    height: 40vh;
+    height: 30vh;
     white-space: pre-wrap;
     overflow-y: scroll;
     display: flex;

M web/contents/play.html → web/contents/play.html

@@ -1,5 +1,6 @@ 
 <article>
     <h2>Playground</h2>
+    <p>You can use the REPL below to try out hex directly in your browser. This is the <em>actual</em> hex REPL, compiled to <a href="https://webassembly.org">WebAssembly</a>.</p>
     <section>
       <section></section>
       <aside>