Document SetPattern validator and clarify which capabilities are not spec fields (choices, default, BindTo)
Rewrite Examples with intro, TOC, collapsible C++20 variants and new feature sections; add C++20 features page
documentation update for binding feature
Fix grammar and typos across wiki prose (Home, About, Tutorial, Examples)
Add C++20 keyword-style brother to each example; document the three styles in the Tutorial
Add C++20 keyword-arguments (designated initializers) example
Add C++20 ranges example
Fix typos in identifiers: kFromOneToInfiniteArgCount, SetIgnoreUnknownArgs, SetAnyNumberOfArgumentsButAtLeastOne; update error-string output
Add bool and SetUsage examples; note positional-before-named ordering
Add examples: flags/defaults, mixed args, error handling, converter, variable count, custom namespace
Simple calc example added
positional example added
added example for 1 argument count
Updated Examples (markdown)
Created Examples (markdown)