Tracking Issue: The great Accessibility Project

[Penaz91]

This is an issue used to track the accessibility of this book. It should keep note of issues like Dyslexia and just general accessibility of the material.

• Set larger line spacing
• Find a decent sans-serif math font
• Keep paragraphs short, avoid "walls of text"
• Break paragraphs with example images (which can work as "checkpoints" for the reader)
• Consider using a less "white" background, to reduce visual stress
• Avoid justified text (if spaces change in length, things may be harder to read)
• Consider a bigger font size (12 to 14pt)
• Consider avoiding red and blue (colorblindness)
• Consider migrating to OpenDyslexic or using a well-made sans-serif font (with letters that look well differentiated from each other)
• Improve contrast in boxes and captions (Contrast ratio of at least 4.5:1 as per WAI-WCAG AA, better if 7:1 - WCAG AAA)
  • Contrast in code captions (PDF version) is insufficient: 2.9:1
  • Contrast in tip boxes is sufficient (6.2:1 in title, 18.9:1 in content)
  • Contrast in Pitfall boxes is sufficient (6.5:1 in title, 19.2:1 in content)
  • Contrast in Trivia boxes is problematic (2.5:1 in title, 20.4:1 in content)
  • Contrast in Note boxes is problematic (2.4:1 in title, 19.8:1 in content)
  • Contrast in Wizardry boxes is sufficient (7.9:1 in title, 19.1:1 in content)
• Pure txt version with enhanced math for Visually Impaired people (see https://gitlab.com/Penaz/2dgd_f0th/-/issues/8)

[Penaz91]

Code captions have been edited in PDF edition, new contrast is 12.3:1

[Penaz91]

Contrast in trivia box title has been edited, it is now 6.16:1

[Penaz91]

Note title box contrast fixed, now at 8.39:1