pub fn render_syntax_section(key: &str) -> Option<String>Expand description
Render a single Syntax section by its fragment key (e.g. "collections"),
or None if no such section exists.
This is what backs help <subsystem> for a syntax feature big enough to want
its own topic (help collections) without hand-writing a second, driftable
copy of the reference text — single-sourced with render_syntax_reference
and content/en/syntax.md. The pattern generalizes to any future
subsystem-sized syntax feature: give its syntax_section a memorable key and
it’s queryable via help <key> for free.