diff --git a/packages/viewer/src/components/Dev/Preview.svelte b/packages/viewer/src/components/Dev/Preview.svelte
index cc8466e..e4466a7 100644
--- a/packages/viewer/src/components/Dev/Preview.svelte
+++ b/packages/viewer/src/components/Dev/Preview.svelte
@@ -38,6 +38,7 @@
   </div>
   <div class="col-sm" data-testid="output">
     <Typeset {body} {truncated} />
+    <hr />
     <section class="description-markdown">
       <Source source={body} />
     </section>
diff --git a/packages/viewer/src/components/Shared/SeMarkdown.svelte b/packages/viewer/src/components/Shared/ExtMarkdown.svelte
similarity index 100%
rename from packages/viewer/src/components/Shared/SeMarkdown.svelte
rename to packages/viewer/src/components/Shared/ExtMarkdown.svelte
diff --git a/packages/viewer/src/components/Shared/Source.svelte b/packages/viewer/src/components/Shared/Source.svelte
index 31db9d7..2716334 100644
--- a/packages/viewer/src/components/Shared/Source.svelte
+++ b/packages/viewer/src/components/Shared/Source.svelte
@@ -1,5 +1,5 @@
 <script lang="ts">
-  import SeMarkdown from './SeMarkdown.svelte'
+  import ExtMarkdown from './ExtMarkdown.svelte'
   export let source: string
   let showMarkdown = false
 </script>
@@ -16,5 +16,5 @@
   <h4>π-Base Markdown</h4>
   <pre>{source}</pre>
   <hr />
-  <SeMarkdown {source} />
+  <ExtMarkdown {source} />
 {/if}