diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index f0988f20..00000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/core/.DS_Store b/core/.DS_Store
deleted file mode 100644
index 8d6a5d0c..00000000
Binary files a/core/.DS_Store and /dev/null differ
diff --git a/core/templates/.DS_Store b/core/templates/.DS_Store
deleted file mode 100644
index f0988f20..00000000
Binary files a/core/templates/.DS_Store and /dev/null differ
diff --git a/core/templates/core/unit_list.html b/core/templates/core/unit_list.html
index d3d1195a..272a7858 100644
--- a/core/templates/core/unit_list.html
+++ b/core/templates/core/unit_list.html
@@ -27,11 +27,11 @@
   </p>
   <ul>
     <li>
-      Check mark means you’ve done the unit.
+      Check mark (✓) means you’ve done the unit.
     </li>
-    <li>Blue clock means the unit is unlocked but not done.</li>
+    <li>Blue clock (⏲) means the unit is unlocked but not done.</li>
     <li>
-      Grey hourglass means the unit is locked but on your to-do list.
+      Grey hourglass (⧖) means the unit is locked but on your to-do list.
     </li>
     <li>
       No symbol (bolded black) is everything else.