it's a set

index.html

@@ -309,7 +309,7 @@ <h3>
       </li>
       <li>Let |range| be [=list/get the indices=] of |providers|.
       </li>
-      <li>[=For each=] |n| of the |range|:
+      <li>[=Set/For each=] |n| of the |range|:
         <ol>
           <li>Let |provider| be [=list/item=] at |providers|'s |n| index.
           </li>