Source forms
The forms below are header patterns: square brackets mean optional syntax, | lists alternatives, and words such as selector, value and caption are placeholders. They are source fragments requiring the stated owner, not complete applications. Content suites use ordinary indented Can; named slots use slot name with a nonempty indented suite. Slots cannot mix with regular direct children.
Appearance options are optional and limited to the per-entry values below. No raw classes, arbitrary properties or event handlers are accepted. Input captions derive from their fields. A selector has at most one writable control, and unmentioned eligible inputs still render in owning schema order. A collection/result scope ends field placement unless it contains a new explicit field owner.
breadcrumbs
Header: breadcrumbs. Derived-ancestry leaf; alternative authored ancestry is invalid.
card
Header: card [caption] [layout=stack|columns]. Requires a nonempty regular content suite.
Appearance: size=xs|sm|md|lg|xl, variant=solid, caption=text.
divider
Header: divider [caption]. Leaf; omitting the caption gives an uncaptioned divider.
Appearance: tone=neutral|primary|secondary|accent|info|success|warning|error, variant=solid, orientation=horizontal|vertical, caption=text.
dock
Header: dock [pages=selection]. No positional expression. Bare form derives admitted navigation; pages= selects an array of declared static route shapes such as ["/tasks"]; an authored presentation suite may contain canonical links/actions or display groups, never route declarations.
Appearance: size=xs|sm|md|lg|xl, variant=solid, caption=text.
footer
Header: footer [caption]. Requires a nonempty regular content suite or its named-slot suite.
Slots: slot content (required, once); slot start (optional, once); slot end (optional, once).
Appearance: variant=solid, orientation=horizontal|vertical, caption=text.
hero
Header: hero [caption]. Requires a nonempty regular content suite or its named-slot suite.
Slots: slot content (required, once); slot start (optional, once); slot end (optional, once).
Appearance: variant=solid, caption=text.
join
Header: join. Requires a nonempty scope-transparent content suite; it adds presentation only.
Appearance: variant=solid, orientation=horizontal|vertical.
link
Header: link target=destination [caption=text]. Leaf with a required safe URL or authorized file destination. Internal routes retain their admission checks. A caption may be omitted only when a safe destination caption already exists; otherwise it is required.
Appearance: tone=neutral|primary|secondary|accent|info|success|warning|error, variant=solid.
megamenu
Header: megamenu [pages=selection]. No positional expression. Bare form derives admitted navigation; pages= selects an array of declared static route shapes such as ["/tasks"]; an authored presentation suite may contain canonical links/actions or display groups, never route declarations.
Appearance: size=xs|sm|md|lg|xl, variant=solid, orientation=vertical, caption=text.
menu
Header: menu [pages=selection]. No positional expression. Bare form derives admitted navigation; pages= selects an array of declared static route shapes such as ["/tasks"]; an authored presentation suite may contain canonical links/actions or display groups, never route declarations.
Appearance: size=xs|sm|md|lg|xl, variant=solid, orientation=horizontal|vertical, caption=text.
navbar
Header: navbar [pages=selection]. No positional expression. Bare form derives admitted navigation; pages= selects an array of declared static route shapes such as ["/tasks"]; an authored presentation suite may contain canonical links/actions or display groups, never route declarations. Navbar additionally accepts its closed slot schema.
Slots: slot content (required, once); slot start (optional, once); slot end (optional, once).
Appearance: variant=solid, caption=text.
stack
Header: stack. Requires a nonempty scope-transparent content suite; it adds presentation only.
tabs
Header: tabs [preferences.selector]. An owned enum-preference selector may be a leaf or a suite of tab enum_case children, every case exactly once. Without a selector, requires nonempty tab caption children and transient selection. Each tab has a nonempty content suite.
Appearance: size=xs|sm|md|lg|xl, variant=solid.