Root-Level Constructs
The project root is the language's only unnamed space. It accepts imports, declare forms, functions, values, types, startup functions, child spaces, and child classes.
Imports
Canonical module imports have this shape:
import ModuleName [as LocalName] [features Feature...] [version Semver]
The quoted Cargo-name escape hatch requires an alias:
import "cargo-name" as LocalName [features Feature...] [version Semver]
Inherited wrapper policy has this shape and creates no binding:
declare import ModuleName [features Feature...] [version Semver]
Imports and declare import forms precede all other semantic root members. Comments and anchors may precede or occur between them.
Selections
Width is one of (16, 32)
Person is one of (User, Admin, null)
Permission is many of (read, write)
Message is one case of (text(value is string), closed())
Extended is Base or one of (extra)
Combined is First or Second or ThirdWidth is one of(16 32) Person is one of(User Admin null) Permission is many of(read write) Message is one case of(text(value is string) closed()) Extended is Base or one of(extra) Combined is First or Second or Third
Selection composition uses or; selection bodies do not support spread. one of and many of bodies contain no author-defined functions. The old one value of form is retired.