Lee Thomson

[Lee Thomson @liquidarts]

@ohmwu It stood out to me that the red sections were always the content that was being taught on the page.

[Lee Thomson @liquidarts]

@ohmwu They still use the red and black text in Japan. You cover the page with a red plastic filter to obscure the red while while studying, and remove it to reveal the answers.

A random link I found; Hopefully it works!
https://t.co/IO1Bu5IP8p