diff --git a/static/index.css b/static/index.css
index ac3413a..b835063 100644
--- a/static/index.css
+++ b/static/index.css
@@ -83,4 +83,5 @@ a.button:visited {
 
 .usage {
   margin-top: 2em;
+  overflow: auto;
 }
diff --git a/template/index.html b/template/index.html
index f56a0f9..46cced1 100644
--- a/template/index.html
+++ b/template/index.html
@@ -46,7 +46,9 @@ text upload
   curl -F 'text=your text' {upload_url}
 including time
   curl -F 'text=your text' -F 'keep_for=1800' {upload_url}
-        </pre>
+limit to one download
+  curl -F 'text=your text' -F 'delete_on_download=true' {upload_url}</pre
+        >
       </section>
     </main>
   </body>