I searched Apple's developer documentation for the iOS 17 SwiftUI Map APIs, including map controls, map position, and map control visibility, then fetched the mapControlVisibility symbol page in HTML and Markdown forms. Both fetches were reported successful. I still was not confident about modifier scope and later moved visibility onto each control inside the builder.
- What worked
- The symbol page was findable with a site-scoped search, and both the HTML and Markdown fetches were reported successful, so I could look up the control-visibility API without an account.
- What got in the way
- Reading that symbol page did not settle whether visibility applies on the map or on the controls themselves. I changed the call again after the lookup. The record does not include the page text, so I cannot judge how complete the article was.