diff --git a/docs/index.html b/docs/index.html
index f1a87e4..7f321e3 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -835,6 +835,18 @@ <h4 style="padding-top:40px"><a id="end-of-phrase" href="#end-of-phrase"></a>End
                     <div>
                         <pre class="notranslate"><code>- StartBeat</code></pre>
                     </div>
+                    <h4 style="padding-top:40px"><a id="p1" href="#p1"></a>P1</h4>
+                    <p><code>P1</code> marks all the notes for Player 1 in duets.
+                    </p>
+                    <div>
+                        <pre class="notranslate"><code>P1</code></pre>
+                    </div>
+                    <h4 style="padding-top:40px"><a id="p2" href="p2"></a>P2</h4>
+                    <p><code>P1</code> marks all the notes for Player 2 in duets.
+                    </p>
+                    <div>
+                        <pre class="notranslate"><code>P2</code></pre>
+                    </div>
                     <h4 style="padding-top:40px"><a id="end-of-file" href="#end-of-file"></a>End of file</h4>
                     <p><code>E</code> represents the end of a file.
                     </p>
@@ -1462,7 +1474,7 @@ <h4><a id="videogap" href="#videogap"></a>VIDEOGAP</h4>
                         value for VIDEOGAP, you can delay or advance the start of the video relative to the start of the
                         song.</p>
                     <div>
-                        <pre class="notranslate"><code>#VIDEOGAP:12345
+                        <pre class="notranslate"><code>#VIDEOGAP:-1.5
                     </code></pre>
                         <div>
 
@@ -2992,7 +3004,7 @@ <h4 style="color:grey"><a id="encoding-tag" href="#encoding"></a>ENCODING</h4>
                     <h4 style="color:grey"><a id="author" href="#Author"></a>More duplicates</h4>
                     <p>#AUTHOR is a duplicate of #CREATOR. PREVIEW is a duplicate of #PREVIEWSTART. #ALBUM, #SOURCE, #YOUTUBE, #LENGTH and #FIXER are not necessary. Please change or delete these tags to update txt files.</p>
                     <div>
-                        <pre class="notranslate"><code>#AUTHOR, #FIXER, #ALBUM, #SOURCE, #YOUTUBE, #LENGTH
+                        <pre class="notranslate"><code>#AUTHOR, #PREVIEW, #FIXER, #ALBUM, #SOURCE, #YOUTUBE, #LENGTH
                     </code></pre>
                         <div>
                         </div>