Case study
If you are using keyboard commands, use Tab to move through the media player controls and the Spacebar to activate them. The voice-over script for this video is shown in text underneath.
I use a lot of hand-held tools at work,
but I think one of the most dangerous ones is the electric plane.
The electric plane does the same job as a hand plane, but it's much faster and more powerful,
so if something goes wrong there's a much greater chance of getting hurt.
You can see the SOP I've written up for the electric plane by selecting the link at the bottom of this page.