diff --git a/Readme.md b/Readme.md
index 470019ed9..9001c5dca 100644
--- a/Readme.md
+++ b/Readme.md
@@ -33,6 +33,6 @@ Each sheet supports these metadata:
 title: React.js
 category: React
 layout: 2017/sheet   # 'default' | '2017/sheet'
-ads: true            # Add this for ads
+ads: false           # Add this to disable ads
 ---
 ```
diff --git a/_layouts/2017/sheet.html b/_layouts/2017/sheet.html
index 3ded09b34..25b9e16fe 100644
--- a/_layouts/2017/sheet.html
+++ b/_layouts/2017/sheet.html
@@ -6,9 +6,9 @@ type: article
 {% include 2017/top-nav.html page=page %}
 
 <div class='body-area'>
-  <div class='main-heading {% if page.ads %}-with-ads{% endif %}'>
+  <div class='main-heading {% if page.ads != false %}-with-ads{% endif %}'>
     <h1 class='h1'>{{ page.title }} <em>cheatsheet</em></h1>
-    {% if page.ads %}
+    {% if page.ads != false %}
       <div class='HeadlineAd ad'>
         <script async src='//cdn.carbonads.com/carbon.js?zoneid=1673&serve=C6AILKT&placement=ricostacruzcom' id="_carbonads_js"></script>
       </div>
diff --git a/vim.md b/vim.md
index 1d45709b2..719362b3d 100644
--- a/vim.md
+++ b/vim.md
@@ -218,9 +218,15 @@ Do these in visual mode.
 
 ### Marks
 
+| Shortcut        | Description                            |
+| ---             | ---                                    |
 | <code>`^</code> | Last position of cursor in insert mode |
 | <code>`.</code> | Last change                            |
 | <code>``</code> | Last jump                              |
+| ---             | ---                                    |
+| `ma`            | Mark this cursor position as `a`       |
+| `'a`            | Jump to cursor position `a`            |
+{: .-shortcuts}
 
 ### Misc
 
@@ -230,6 +236,7 @@ Do these in visual mode.
 | `]p`     | paste under the current indentation level |
 | ---      | ---                                       |
 | `zz`     | Center this line                          |
+{: .-shortcuts}
 
 ### Command line
 
@@ -237,6 +244,7 @@ Do these in visual mode.
 | ---          | ---                                       |
 | `<C-r><C-w>` | insert current word into the command line |
 | `<C-r>"`     | paste from " register                     |
+{: .-shortcuts}
 
 ### Text alignment