| →, ↓, ⇟, space | next slide | 
| ←, ↑, ⇞ | previous slide | 
| f | toggle footer | 
| r | reload slides | 
| + | increase font size | 
| - | decrease font size | 
| b | toggle black background | 
| s | show/hide source | 
| a | show all slides | 
| h, z | toggle help (this) | 
Source (markdown) with added path to images. Modifications will not be saved!