# Markdown Demo note: Just a test --- ## External 1.1 Content 1.1 ```javascript var foo = "bar" ``` Note: This will only appear in the speaker notes window. --- ## External 1.2 Content 1.2 --- ## External 2 Content 2.1 --- ## External 3.1 Content 3.1 ---- ## External 3.2 Content 3.2 ---- ## External 3.3 (Image)  ---- ## External 3.4 (Math) `\[ J(\theta_0,\theta_1) = \sum_{i=0} \]`