diff --git a/demo.Rmd b/demo.Rmd
index 0be90792b800a088f8db3e07b9c1ec9cdfd98a29..c66a9a214aa692adaf221d94b39d1fd30d947f1b 100644
--- a/demo.Rmd
+++ b/demo.Rmd
@@ -11,10 +11,25 @@ output:
   pdf_document:
     toc: yes
 ---
-
-```{r setup, include=FALSE}
+```{r setup, include=TRUE}
 knitr::opts_chunk$set(echo = TRUE)
 ```
+
+# Code Chunks 
+```{r vectors, echo=TRUE, eval=TRUE}
+vektor_a <- c(1,2,3)
+vektor_b <- c(4,5,6)
+
+```
+
+```{r ergebnis, echo=FALSE, eval=TRUE}
+vektor_out <- vektor_a * vektor_b
+vektor_out
+```
+
+`r vektor_out`
+`r mean (vektor_out)`
+
 # Test
 **zum Beispiel**
 
diff --git a/demo.html b/demo.html
index 66c0dc51986b76a4ba081a5c93e509d1022b1ae2..b5ef69462f129d891e4bf60b1010bd0d7581a51f 100644
--- a/demo.html
+++ b/demo.html
@@ -1492,8 +1492,16 @@ border-radius: 0px;
 </div>
 
 
-<div id="test" class="section level1" number="1">
-<h1><span class="header-section-number">1</span> Test</h1>
+<pre class="r"><code>knitr::opts_chunk$set(echo = TRUE)</code></pre>
+<div id="code-chunks" class="section level1" number="1">
+<h1><span class="header-section-number">1</span> Code Chunks</h1>
+<pre class="r"><code>vektor_a &lt;- c(1,2,3)
+vektor_b &lt;- c(4,5,6)</code></pre>
+<pre><code>## [1]  4 10 18</code></pre>
+<p>4, 10, 18 10.6666667</p>
+</div>
+<div id="test" class="section level1" number="2">
+<h1><span class="header-section-number">2</span> Test</h1>
 <p><strong>zum Beispiel</strong></p>
 <ul>
 <li>Liebling</li>
@@ -1502,8 +1510,8 @@ border-radius: 0px;
 </ul>
 <p><span class="math display">\[ 2+2 = 4 \]</span></p>
 </div>
-<div id="r-markdown" class="section level1" number="2">
-<h1><span class="header-section-number">2</span> R Markdown</h1>
+<div id="r-markdown" class="section level1" number="3">
+<h1><span class="header-section-number">3</span> R Markdown</h1>
 <p>This is an R Markdown document. Markdown is a simple formatting
 syntax for authoring HTML, PDF, and MS Word documents. For more details
 on using R Markdown see <a href="http://rmarkdown.rstudio.com" class="uri">http://rmarkdown.rstudio.com</a>.</p>
@@ -1520,8 +1528,8 @@ chunk like this:</p>
 ##  3rd Qu.:19.0   3rd Qu.: 56.00  
 ##  Max.   :25.0   Max.   :120.00</code></pre>
 </div>
-<div id="including-plots" class="section level1" number="3">
-<h1><span class="header-section-number">3</span> Including Plots</h1>
+<div id="including-plots" class="section level1" number="4">
+<h1><span class="header-section-number">4</span> Including Plots</h1>
 <p>You can also embed plots, for example:</p>
 <p><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAqAAAAHgCAMAAABNUi8GAAAAXVBMVEUAAAAAADoAAGYAOjoAOpAAZrY6AAA6ADo6AGY6Ojo6kNtmAABmADpmkJBmtrZmtv+QOgCQkGaQtpCQ2/+2ZgC225C2///bkDrb/7bb////tmb/25D//7b//9v///93nJJvAAAACXBIWXMAAA7DAAAOwwHHb6hkAAAN6UlEQVR4nO3djXbqurlGYSUNpIXVHVpo3DjA/V/m9j8miR1bn2Re0HzGOGvk7IDsFWaNrbAsdwaEuVvvADCGQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCEtcKAOmORWgYYdDo8qUqCnXZ3/83uQ4ZCsOIFmblN/kbdfmIZDuqIEetp1WWYvH+bhkLAogR63b+2X+cCbPIFiEo6gkBbrHLQ5hHIOCptIV/HHbX0VP3D8JFB89+OkJ/OgEOHOP2VBoNDgen9++8+Tnz8VE/WYadFAmajHXEsGyjQT5lvwHHR4on7+h1SQjOWu4jmCIhQm6iGNiXpIYx4U0ggU0iIFenBuVU3Wvw08gEAxSaSLpOLc8+BW5bkoF0mwiDfNlD/tz0wzwSjeRH09Rc8n6mHCERTSIp+D9n6nZBgO6eIqHtKYB4U0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoU0AoW0SIFWC8kWBlaLJ1BMFCfQzDWrcOeO5bhhESXQ3irx5crx1uGQsCiBHrfdMvH5wJs8gWISjqCQFusctDmEcg4Km0hX8cdtfRU/cPwkUEzEPCikESikMVEPaUzUQxrTTJC28ES968wYDgnjCAppTNRDGhP1kMY8KKQRKKRFCvRQXLx/rp172gcZDsmKE2jV5+v+asLJMBzSFWketLh2P6zKL5lmgkm0ifpmLpRP1MMk0lt8cfTMOILCLk6gx+3ze3UIzYeukggUk8SaZsrrifpVoOHwGOZ/CIN5UCzHnWe/8gSKxbjen/OeE/KBNxkO94BAIY1AoY1zUGjjKh4PhkAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhjUAhzSfQ49a9fBwGVkcIvV2kzSPQ/GmfvXxU9wBdYLtI2/xAy7vWlTdVzAbX4Qy6XaRtfqDl3WnLQIduTRt4u0ib/xH0MLgGUtDtIm3e56DdYnKRt4u0eV7FjywwE3i7SBvzoJDmdw664HaRNr+r+AW3i7T5XCSZ5pfmbhdp8zmC1gt4OOZBER8XSZBGoJDGWzykeR9BjZdKBIpJ/N/iD4PLHAbdLtLmHyifZsIC/APl86BYgHegx+3YW/xp98uFFIFiEv+r+LGPg2au+X197gZ+cU+gmCTKPGjv8yTZQMcEikmiBNr7PMnQpRSBYhKPQMt/z5mNvsVzBEUoHoEeXj4+16vRedDu34NwDgobv8+D5kWAo/Ogv15JESgm8Qv0UMTJPCgW4PMWvzpuyzuL8KtOxOd1keSe9qfdaJ9M1COMOJ8HZaIegTBRD2lR5kGHJ+pdZ95uIlVR5kE5giKUOPOgTNQjkEjzoEzUIwzmQSEt0jxouO3i3oS9Ao767+I/14O3cSLQR+XOQV/dSJ8HvUwn8XnQtLjen+HGm/fA35ehaS7eOYKmRyDQKcvQlJdRBJqi2wc6cRmaw9OeQFN083PQqcvQZG5DoCm69VX85GVoPtf/IFAYeZ+DTliG5rQbfgyBYhLPq3iWocEyuIEtpPmdgy64XaTN7yp+we0ibT4XSSxDg8Vwj3pI4yIJ0ggU0rznQX/7PVKo7SJtfr9JKv7MbDP1BIpJfOZB62mmX38XH2a7SJvHVfyf+tDJMjRYgP8RdOiWDIG3i7T5nINWn1Ga8GmmINtF2gwT9aa5egLFJMyDQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBQhqBYr6wK82Mbyr4A28yHJYUeK2uX7cV9oE3GQ4Lcr0/F9pYyAfeZDgsiEAhjUChjXNQaOMqHqhFCvS0++X2dwSKSeIEmrlmucTcDaybSKCYJEqgveU8h+7DTKCYJEqgveU8h+5kT6CYhCMopMU6B20OoZyDwibSVXx7I/vBlUAIFJMwDwppBAppTNRDGhP1kMY0E6QtPFF/WaRuxnBIGEdQSGOiHtKYqIc05kEhjUAhLVKgWfH2Xp2GZnzcDhaRLpKe9sVp6OpMoDCKOM102hWXSAQKk6gT9YeXDwKFSdyJ+sOKQGES6Ry0yfK4Hfo8E4FikmhX8fWb/GlHoHdK5PMSzIPiR0vef2kMgeIni97BbgyB4icEGnY4BEagYYdDaJyDQhtX8cDvCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCDRhIp+oG0Wg6VL5TPIoAk2WzL/qGEWgySLQBYfDfAS64HDwwDnocsPBB1fxiw2HR0WgkEagkEagkEagkEagkEagD+4eppLGEOhju4vJ+DEE+tDu49eZYwj0oRFo9O3CgkCjbxcmnIPG3i5suIqPvF2kjUAhjUAfwL2/jY8h0Pt39xdCYwj07t3/VNIYAr17BDrvgTcZLmUEOu+BNxnu4Y1dB3EOOuuBNxnu0Y03yFX8nAfeZLgH99jv4qMIVMfwgZBAAz7wJsM9gpG3cQIN+MCbDHcvRs4WRyN86OugUZECPe1c5fl9xnCjV6pj1wG+T4wy6G8R+r2NP/J10Kg4gWZuU3+Rt19MGO63V8/7ZV90UO936oTfxsdECfS067LMXj4mDjf2Anm/sosP6v/EhN/Gx0QJ9Lh9a7/Mr9/kXWdgAwkHmu7b+BiOoGEH5VonsFjnoM0hlHPQL9/kIDlTpKv447Z+Ix84fqZ6FY/ZIgW69HB4VAQKaQQKaQQKaQQKaQQKaQQKaQQKaTcLFJjkRoHG3AbDJDZM8LEib4NhEhsm+FiRt8EwiQ0TfKzI22CYxIYJPlbkbTBMYsMEHyvyNhgmsWGCjxV5GwyT2DDBx4q8DYZJbJjgY0XeBsMkNkzwsYDgCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSCBTSogeaO/e0N41Q35R0ZRvr85/vV3vjOVQ9jG2PqqVSNua96YYx/nyybzthGibIq9UTO9C82Mfctp+fr3vzWMdtdVP9bgTPoZphTHt02hVPyMqX0LQ3l2FsP5+s+Btd74RtmBCvVl/kQOvb2h9WljHaBRsMY+X10k7dCJ5DNcPY9uhzXd5HvXhBbXvTDWPbm+N2Uz5zZfzZdMOEeLWuRA708mP0l62sY+VuU/3cuhH8hmqHCbBH5bHFuDftMAH2piwrwN5UgQb42VyJHWh1wM9Nu3n4V32yZRqrDrQdwXuo+ikB9ujQ2wnbMAH2JisyD7A35TBhXq2eyIHWJyGmU5Hjtlyy4bCxjVX9pLoRvIeqhgmwR+UyKfa9qYYx701eBWXem3qYMK9Wj36gzUDP7zKB2vcob6+RjHvjulM808/ntHv5CPA/l3KYAHtz7Q7e4uuB1m86b/HWPaqXmTLvTX+1KtvPpzwjDnDC0eVofbV67uAiqR7odW8aK8RF0vk6UO89atbkte5N1l9NzfbzKYMKcMlWP9W8N1f0p5nqv2nem5bxkYeYZrrq3HuP2vX6jHvTDmPbm+/Ptg0T5tXquYOJ+uovedjYxsqDTNS3V/GWPfpctwc+095chrH9fA7FeWMVk+1n0w0T5NXqif6rzsz+C6+Dc/XRwjBW897cjeA5VDOMZY+y+g7D5dMse9Mbxvbz+f5s2zAhXq0ePiwCaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQQKaQTqLX9b/pnpIVBfx61vZv7PTBCB+iLQRRCop8+1cy8f1V0QyzUt1n9tiy/K//h2/nz977pZS6759vHPf8oVluo7E1bP/H8ZaVFq852sXXwOXxCor+o4WC3gst4U/1et+1amVt5luMgwd71vN2tfrOr/Uj7z2AZafad9HL4hUF91ZmVU1Z2vN81Nj6vbvZf/NXv56L5dfXH8s6/vlX0d6OZ8Gea2fyNJBOqrTKy+xXW7BEH7R3Of9nZFl+L/7c468/I9/jrQt/NlmNv9bWQRqK8q0Po+3O5LoK/tkkPtt+tAixPN5/99O4K+nS/D3PrvJIhAfV2OoOdLm18Cbb9dZdg9ZuAIip8QqK8us9KXt/hqBZbyHPTt8thmsbvuLX5zefNn3mkYgfqqEqvXT21WLr4EWq7A0l7Fl9/ujqDHbbW65qZaNvC06978m8fd+u8kiEC9Hdp50OLI+CXQf68vS7GU3+7OQZ/2ZYblM4tU3V/b9vKpeRy+IdDwuBwPiEDDI9CACDQ8Ag2IQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCGNQCHtb/5QAr6+cJD7AAAAAElFTkSuQmCC" /><!-- --></p>
 <p>Note that the <code>echo = FALSE</code> parameter was added to the
diff --git a/demo.md b/demo.md
index 0aed85679254178ed2e9b7fde1aad0a6b160e019..a32a15d5e6cb2c1fbc24b4e5ca6c819e7d058622 100644
--- a/demo.md
+++ b/demo.md
@@ -12,6 +12,24 @@ output:
     toc: yes
 ---
 
+```r
+knitr::opts_chunk$set(echo = TRUE)
+```
+
+# Code Chunks 
+
+```r
+vektor_a <- c(1,2,3)
+vektor_b <- c(4,5,6)
+```
+
+
+```
+## [1]  4 10 18
+```
+
+4, 10, 18
+10.6666667
 
 # Test
 **zum Beispiel**