fs

type Entity interface {
	Kind() EntityKind
	Section() *Section
	Group() *Group
	Meta() *frontmatter.Meta
	CompoundID() string
	ParentEntity() Entity
}

type EntityKind int

type Group struct {
	Metadata *frontmatter.Meta
	Children []Entity
	Parent   *Group
	Content  *Section
}

type Section struct {
	Metadata           *frontmatter.Meta
	Content, SideNotes []string
	HasSideNotes       bool
	Parent             *Group
}