[ISO/CS C++2023] Specification unclarity around "ISO weeks"

[jensmaurer]

• 29.12 Formatting What does the "ISO week-based week number" refer to? How does the user know what this means? Please make the text clearer.
• 29.13 Parsing see comment above - What does the "ISO week-based week number" refer to? How does the user know what this means? Please make the text clearer.
• 29.13 Parsing see comment above - what does the "ISO weekday" mean?

[jwakely]

https://en.wikipedia.org/wiki/ISO_week_date
https://en.wikipedia.org/wiki/ISO_8601#Week_dates