Subject views
A Subject's data can be presented through multiple Layouts, each tailored to a different context. Below, the Sandbox Subject is rendered in three views: the default schema view, plus the SandboxCompact and SandboxDetail layouts.
Edits in any view also propagate to the others without a page reload.
Sandbox Subject uses a dedicated Sandbox schema, so editing it here won't affect any other Subject in the demo wiki.
Custom View Types
View Types are extensible: an extension can register a new way to render Subjects. The SandboxCard layout uses redherb-card, a custom View Type from the bundled RedHerb example extension. It arranges the data as a two-column "document control" card and reads a fullWidthProperties setting from the Layout to span the Description across both columns.