Features suggestion: focus/zen mode and typewriter mode

[pdrive]

• focus/zen/distraction-free mode. the ability to hide or dim interface
• typewriter mode. highlight current line
  examples of typewriter mode below:

https://postimg.cc/DS1XxLFG
https://postimg.cc/qzPKcjf0

[github-actions]

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[pdrive]

• typewriter mode. highlight current line

EDIT: highlight current line AND center it in the middle of the screen