diff --git a/README.md b/README.md
index 3ed3892..26e0643 100644
--- a/README.md
+++ b/README.md
@@ -1962,6 +1962,8 @@ IndexError: deque already at its maximum size
 
 Threading
 ---------
+* **CPython interpreter can only run a single thread at the time.**
+* **That is why using multiple threads won't result in a faster execution, unless there is an I/O operation in the thread.**
 ```python
 from threading import Thread, RLock
 ```
@@ -1993,10 +1995,15 @@ with lock:
 ```python
 from concurrent.futures import ThreadPoolExecutor
 with ThreadPoolExecutor(max_workers=None) as executor:
-    results = executor.map(lambda x: x + 1, range(3))         # (1, 2, 3)
-    results = executor.map(lambda x, y: x + y, 'abc', '123')  # ('a1', 'b2', 'c3')
+    <iter>   = executor.map(lambda x: x + 1, range(3))         # (1, 2, 3)
+    <iter>   = executor.map(lambda x, y: x + y, 'abc', '123')  # ('a1', 'b2', 'c3')
+    <Future> = executor.submit(<function>, <arg_1>, ...)
+```
+
+```python
+<bool> = <Future>.done()    # Checks if thread has finished executing.
+<obj>  = <Future>.result()  # Waits for thread to finish and returns result.
 ```
-* **CPython interpreter can only run a single thread at the time. That is why this map() won't be faster than the standard map(), unless passed function contains an I/O operation.**
 
 
 Operator
diff --git a/index.html b/index.html
index 49d62e0..5e42d13 100644
--- a/index.html
+++ b/index.html
@@ -1729,9 +1729,13 @@ cursor.execute(<span class="hljs-string">'&lt;query&gt;'</span>, &lt;dict/namedt
 IndexError: deque already at its maximum size
 </code></pre></div>
 
-<div><h2 id="threading"><a href="#threading" name="threading">#</a>Threading</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> threading <span class="hljs-keyword">import</span> Thread, RLock
+<div><h2 id="threading"><a href="#threading" name="threading">#</a>Threading</h2><ul>
+<li><strong>CPython interpreter can only run a single thread at the time.</strong></li>
+<li><strong>That is why using multiple threads won't result in a faster execution, unless there is an I/O operation in the thread.</strong></li>
+</ul><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> threading <span class="hljs-keyword">import</span> Thread, RLock
 </code></pre></div>
 
+
 <div><h3 id="thread">Thread</h3><pre><code class="python language-python hljs">thread = Thread(target=&lt;function&gt;, args=(&lt;first_arg&gt;, ))
 thread.start()
 ...
@@ -1751,13 +1755,14 @@ lock.release()
 
 <div><h3 id="threadpool">Thread Pool</h3><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> concurrent.futures <span class="hljs-keyword">import</span> ThreadPoolExecutor
 <span class="hljs-keyword">with</span> ThreadPoolExecutor(max_workers=<span class="hljs-keyword">None</span>) <span class="hljs-keyword">as</span> executor:
-    results = executor.map(<span class="hljs-keyword">lambda</span> x: x + <span class="hljs-number">1</span>, range(<span class="hljs-number">3</span>))         <span class="hljs-comment"># (1, 2, 3)</span>
-    results = executor.map(<span class="hljs-keyword">lambda</span> x, y: x + y, <span class="hljs-string">'abc'</span>, <span class="hljs-string">'123'</span>)  <span class="hljs-comment"># ('a1', 'b2', 'c3')</span>
+    &lt;iter&gt;   = executor.map(<span class="hljs-keyword">lambda</span> x: x + <span class="hljs-number">1</span>, range(<span class="hljs-number">3</span>))         <span class="hljs-comment"># (1, 2, 3)</span>
+    &lt;iter&gt;   = executor.map(<span class="hljs-keyword">lambda</span> x, y: x + y, <span class="hljs-string">'abc'</span>, <span class="hljs-string">'123'</span>)  <span class="hljs-comment"># ('a1', 'b2', 'c3')</span>
+    &lt;Future&gt; = executor.submit(&lt;function&gt;, &lt;arg_1&gt;, ...)
 </code></pre></div>
 
-<ul>
-<li><strong>CPython interpreter can only run a single thread at the time. That is why this map() won't be faster than the standard map(), unless passed function contains an I/O operation.</strong></li>
-</ul>
+<pre><code class="python language-python hljs">&lt;bool&gt; = &lt;Future&gt;.done()    <span class="hljs-comment"># Checks if thread has finished executing.</span>
+&lt;obj&gt;  = &lt;Future&gt;.result()  <span class="hljs-comment"># Waits for thread to finish and returns result.</span>
+</code></pre>
 <div><h2 id="operator"><a href="#operator" name="operator">#</a>Operator</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">from</span> operator <span class="hljs-keyword">import</span> add, sub, mul, truediv, floordiv, mod, pow, neg, abs
 <span class="hljs-keyword">from</span> operator <span class="hljs-keyword">import</span> eq, ne, lt, le, gt, ge
 <span class="hljs-keyword">from</span> operator <span class="hljs-keyword">import</span> and_, or_, not_