Spending a few minutes reading things mentioned in another issue, I couldn't help noticing the following spelling inconsistencies in the understanding docs:

• WGAG 2.1 SC 1.4.4 & WCAG 2.2 SC 1.4.4
  • 2 × breakpoint
• WCAG 2.1 SC 1.4.10 & WCAG 2.2 SC 1.4.10
  • 2 × break point, 3 × breakpoint(s)
• WCAG 2.2 SC 2.4.11
  • 1 × breakpoint

Since a new third variation break-point has made it into the normative text an SC note of WCAG 2.2 SC 3.2.6, that looks like a winner.