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A Branch Slice Demo
Navigation
Left Arrow: previous step
Right Arrow: next step
Up Arrow: first step
Down Arrow: on/off pen
Space/Tab: next step
Click in a Step: switch to it
Click out of Steps: switch to first

PS.
1. Press F11 to get better experence.
2. If using Chrome, turn off hardware acceleration
Bottom Nav Bar
You may have noticed navigation bar at bottom. You can also navigate with buttons provided there. Fullscreen button is also provided. It is at right most. The other buttons will be introduced in the next.
Use Pen
You can also draw something freely. Click pen button in bottom bar. Then click on/off. Now your mouse becomes a pen! You can mark something important or draw a picture. You can also choose color and width of pen. To switch to pen or mouse quickly, you can press down arrow.
Auto Play
Release your hand and make this slice play automatically. Click timer button, which is besides fullscreen button. Then choose how long will it wait for to switch to next step.
Project Summary
Source code is available on GitHub. It is forked from impress.js. I refer to Prezi to draw these images.

If your are interested in it, please contact me (huangxiaozhe1988@gmail.com)

Use a spacebar or arrow keys to navigate