# description
A positional boundary marker within inline content.

# $comment
This is a type used in Stencila Schema for representing the boundary of a selection
or range within content.

It exists to support editing, review, and provenance workflows that need to
refer precisely to positions in document content without flattening the
document structure into plain text offsets. This makes it useful for
instructions, suggestions, and other document transformations.

Key properties identify the boundary location and its relationship to
surrounding content.

# analogues[].notes
Close conceptual analogue for a position at a node-and-offset boundary, though Stencila uses a document-model node rather than an ephemeral API object.

# analogues[].notes
Approximate editor-model analogue for addressing positions in structured content.

# properties.type.$comment
This is a special property analogous to JSON-LD's `@type` keyword.

# properties.id.$comment
This is a special property analogous to JSON-LD's `@id` keyword.