diff --git a/README.md b/README.md
index 220e32c..0746e5a 100644
--- a/README.md
+++ b/README.md
@@ -2095,9 +2095,10 @@ from operator import itemgetter, attrgetter, methodcaller
 
 ```python
 import operator as op
+elementwise_sum  = map(op.add, list_a, list_b)
+product_of_elems = functools.reduce(op.mul, <collection>)
 sorted_by_second = sorted(<collection>, key=op.itemgetter(1))
 sorted_by_both   = sorted(<collection>, key=op.itemgetter(1, 0))
-product_of_elems = functools.reduce(op.mul, <collection>)
 LogicOp          = enum.Enum('LogicOp', {'AND': op.and_, 'OR' : op.or_})
 last_el          = op.methodcaller('pop')(<list>)
 ```
diff --git a/index.html b/index.html
index d504607..2047a42 100644
--- a/index.html
+++ b/index.html
@@ -1840,9 +1840,10 @@ lock.release()
 
 
 <pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> operator <span class="hljs-keyword">as</span> op
+elementwise_sum  = map(op.add, list_a, list_b)
+product_of_elems = functools.reduce(op.mul, &lt;collection&gt;)
 sorted_by_second = sorted(&lt;collection&gt;, key=op.itemgetter(<span class="hljs-number">1</span>))
 sorted_by_both   = sorted(&lt;collection&gt;, key=op.itemgetter(<span class="hljs-number">1</span>, <span class="hljs-number">0</span>))
-product_of_elems = functools.reduce(op.mul, &lt;collection&gt;)
 LogicOp          = enum.Enum(<span class="hljs-string">'LogicOp'</span>, {<span class="hljs-string">'AND'</span>: op.and_, <span class="hljs-string">'OR'</span> : op.or_})
 last_el          = op.methodcaller(<span class="hljs-string">'pop'</span>)(&lt;list&gt;)
 </code></pre>
diff --git a/web/index_for_pdf.html b/web/index_for_pdf.html
index dcc0103..8c2bcfb 100644
--- a/web/index_for_pdf.html
+++ b/web/index_for_pdf.html
@@ -81,7 +81,7 @@
 <strong>logging, <a href="#logging">35</a></strong>  </p>
 <h3 id="m">M</h3>
 <p><strong>main function, <a href="#main">1</a>, <a href="#basicscripttemplate">41</a></strong><br>
-<strong>map function, <a href="#mapfilterreduce">11</a></strong><br>
+<strong>map function, <a href="#mapfilterreduce">11</a>, <a href="#operator">31</a></strong><br>
 <strong>math module, <a href="#math">7</a></strong><br>
 <strong>memoryviews, <a href="#memoryview">29</a></strong><br>
 <strong>metaclass attribute, <a href="#metaclassattribute">32</a></strong><br>
@@ -113,7 +113,7 @@
 <p><strong>random module, <a href="#random">8</a></strong><br>
 <strong>ranges, <a href="#range">3</a></strong><br>
 <strong>recursion, <a href="#lrucache">13</a></strong><br>
-<strong>reduce function, <a href="#mapfilterreduce">11</a></strong><br>
+<strong>reduce function, <a href="#mapfilterreduce">11</a>, <a href="#operator">31</a></strong><br>
 <strong>regular expressions, <a href="#regex">5</a>-<a href="#specialsequences">6</a></strong><br>
 <strong>requests library, <a href="#scraping">35</a>, <a href="#test">36</a></strong>  </p>
 <h3 id="s">S</h3>
diff --git a/web/index_for_pdf_print.html b/web/index_for_pdf_print.html
index c430246..2d96707 100644
--- a/web/index_for_pdf_print.html
+++ b/web/index_for_pdf_print.html
@@ -85,7 +85,7 @@
 <strong>logging, 35</strong>  </p>
 <h3 id="m">M</h3>
 <p><strong>main function, 1, 41</strong><br>
-<strong>map function, 11</strong><br>
+<strong>map function, 11, 31</strong><br>
 <strong>math module, 7</strong><br>
 <strong>memoryviews, 29</strong><br>
 <strong>metaclass attribute, 32</strong><br>
@@ -117,7 +117,7 @@
 <p><strong>random module, 8</strong><br>
 <strong>ranges, 3</strong><br>
 <strong>recursion, 13</strong><br>
-<strong>reduce function, 11</strong><br>
+<strong>reduce function, 11, 31</strong><br>
 <strong>regular expressions, 5-6</strong><br>
 <strong>requests library, 35, 36</strong>  </p>
 <h3 id="s">S</h3>