Struct HelpSection 

pub struct HelpSection {
    pub heading: String,
    pub lines: Vec<String>,
    pub anchor: Option<String>,
}

One named block of body lines. Rendered after the doc and before the source links. Used by impls to surface type-specific structure (e.g. :describe-command renders an “Arguments:” section from args_schema).

anchor (DESIGN.md §5.11) lets cross-references jump to the section. Convention is kind:name – e.g. arg:path, args (the parent section), section:examples. The anchor name is recorded against the section’s heading line in the rendered output so a follower can scroll directly to it.

Fields

heading: String

The section’s heading line, rendered verbatim (e.g. "Arguments:").

lines: Vec<String>

Body lines under the heading, rendered verbatim — impls indent them themselves.

anchor: Option<String>

Anchor name recorded against the heading line, or None for a section nothing links to.