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paperspec/spec/18-layers.md
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alexmandClaude 76d76353d9 feat: rename to paperspec and add the website
- Rename manuspec to paperspec everywhere outside pixi.toml: prose, the
  tools, provenance tool names and the fixture key derivations, so every
  fixture and vector is rebuilt.
- Move the namespace addresses under the site, mirroring the repository:
  schema $id https://paperspec.scient.ing/schemas/<file>, the JSON-LD
  context https://paperspec.scient.ing/context/scienting-1.jsonld, and
  term IRIs https://paperspec.scient.ing/vocab#<term>. Format
  identifiers (scienting-*) and URNs (urn:scienting:) are unchanged.
- tools/site.py (standard library only) builds _site/: every file of the
  repository at its own path, each Markdown file rendered as a page with
  sidebar navigation, heading anchors matching the forge's, folder
  listings, a vocabulary page for the context's IRIs, a heading search
  and a 404 page; light and dark themes.
- check.py builds the site and checks that every Markdown file has a
  page, every internal link and fragment resolves, no Markdown is left
  unrendered, and every $id, the context address and the vocabulary IRIs
  are files of the site.
- deploy/: a Caddyfile with the media types and CORS the data needs, and
  a guide; .gitea/workflows/site.yml builds on main and publishes with
  rsync when the SITE_* secrets are set.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-14 21:27:21 -04:00

5.2 KiB

18. Layers and annotations

Everything people and models add to a document is an annotation, and annotations are grouped in layers. scienting-layer/1 is the W3C Web Annotation Data Model with the anchor as a selector, so any Web Annotation tool can read it. The JSON-LD context is context/scienting-1.jsonld, published at https://paperspec.scient.ing/context/scienting-1.jsonld.

18.1 One rule decides what is a claim and what is a layer

If a statement is true independently of this paper, it belongs in a claim store as a claim, where it is checked and leveled. If it is about reading this paper, it belongs in a layer, where it is attributed and signed but not checked.

18.2 The layer

A layer is a folder with layer.json and annotations.jsonl. layer.json is an AnnotationCollection with the two contexts, format, an id of the form urn:scienting:layer:<store>/<record id>, a label, a purpose, an audience (novice, student, expert or mixed), a visibility (private, team or public), a license (CC BY 4.0 by default when public), its creator, created, its project, the docs it annotates and its total. A reader turns layers on and off, and the audience dial picks the level of glosses.

18.3 The annotation

Each line of annotations.jsonl is a W3C Annotation:

Property Holds
@context ["http://www.w3.org/ns/anno.jsonld", "https://paperspec.scient.ing/context/scienting-1.jsonld"].
id urn:scienting:annotation:<store>/<record id> (4.6).
type, layer Annotation, and the layer's ID.
motivation A W3C motivation: commenting, describing, linking, questioning, assessing, replying and the others.
creator, created, modified An agent {id, type, name}, with type Person or Software, and times.
body One body (18.4).
target A SpecificResource whose source is urn:scienting:doc:<store>/<key> and whose selector lists an AnchorSelector holding a scienting-anchor/1, optionally followed by a W3C TextQuoteSelector for tools that do not know ours; or, for a reply, a SpecificResource whose source is another annotation.
status proposed, confirmed, rejected or withdrawn. A model's annotation is proposed until a person confirms it.
receipt For a confirmed annotation, the receipt that covers it.

The TextQuoteSelector, when present, repeats the anchor quote's exact, prefix and suffix, with an empty string for a prefix or suffix the quote lacks. It is present only when the anchor's quote is plain text; an anchor whose quote is hashed or keyed (6.3) has none, so the fallback never shows text the anchor withholds.

An annotation's content hash is SHA-256 of the canonical JSON of the annotation without status, receipt and modified. A confirmed annotation is covered by its confirmer's receipt, which lists ["annotation", <record id>, <content hash>]. Replies are annotations that target annotations, so discussions are threads anchored to sentences.

18.4 Bodies

kind W3C type Adds Says
gloss TextualBody audience An explanation at novice, student or expert level.
claim-link SpecificResource source (lode:<tag>), pin, role That the span states, uses or disputes a claim.
symbol SpecificResource source, pin, symbol That this occurrence of a symbol is a symbol claim.
comment TextualBody A remark, opinion or interpretation.
caveat TextualBody A warning a reader should see.
question TextualBody for A question for a reader, a group or the authors.
exercise TextualBody exercise A task with a key and a rule (19).
citation-context TextualBody reference, verdict, reason Why a sentence cites a reference, and whether it supports it.
prerequisite SpecificResource source What to read or know first.
crosslink SpecificResource source, selector That the span corresponds to a span in another document.
translation TextualBody language The span in another language.
description TextualBody role A description of a figure, panel or table for readers who cannot see it: alt, a short text equivalent, or long, a full description.
generated TextualBody generator Text a model wrote about the span; never mistaken for source.

A textual body has a value, and optionally a format (text/plain or text/markdown) and a language. Nothing a model writes is ever stored as source text. A model may propose a description, and like any annotation it stays proposed until a person confirms it; an accessible export uses confirmed descriptions only, and a figure with none has no description. Other text a model writes about a span, such as a summary, is a generated annotation, which names its generator. fixtures/records/layer/ holds a layer with one annotation of each common kind and the receipt that confirms some of them.