# lacing

> Interval annotation system


## Pages in this subsection

- [lacing](lacing.html.md): lacing — interval annotation system.
- [lacing.adapters](lacing.adapters.html.md): I/O adapter registry.
- [lacing.adapters.annot](lacing.adapters.annot.html.md): `.annot` portable file format adapter.
- [lacing.adapters.eaf](lacing.adapters.eaf.html.md): ELAN EAF adapter (Max Planck Institute’s annotation tool format).
- [lacing.adapters.jams](lacing.adapters.jams.html.md): JAMS (JSON Annotated Music Specification) adapter.
- [lacing.adapters.label_studio](lacing.adapters.label_studio.html.md): Label Studio JSON adapter.
- [lacing.adapters.otio](lacing.adapters.otio.html.md): OpenTimelineIO (OTIO) adapter — NLE / video editing interchange.
- [lacing.adapters.textgrid](lacing.adapters.textgrid.html.md): Praat TextGrid adapter.
- [lacing.adapters.web_annotation](lacing.adapters.web_annotation.html.md): W3C Web Annotation Data Model adapter (JSON-LD).
- [lacing.adapters.webvtt](lacing.adapters.webvtt.html.md): WebVTT (W3C TimedText) adapter.
- [lacing.allen](lacing.allen.html.md): Allen’s 13 interval relations as pure predicates.
- [lacing.artifact](lacing.artifact.html.md): Content-addressed artifact references.
- [lacing.artifact_store](lacing.artifact_store.html.md): Artifact store — a metadata catalog and a blob store behind one facade.
- [lacing.bodies](lacing.bodies.html.md): Built-in body schemas.
- [lacing.bodies.character_voice](lacing.bodies.character_voice.html.md): Body schema for per-character voice profiles — the shared voice vocabulary.
- [lacing.bodies.continuity_violation](lacing.bodies.continuity_violation.html.md): Body schema for continuity violations — generic, cross-media.
- [lacing.bodies.named_entity](lacing.bodies.named_entity.html.md): Body schemas for named-entity (NER) annotations.
- [lacing.bodies.reference_lock](lacing.bodies.reference_lock.html.md): Body schema for a *locked reference* — a first-class “this is canonical”.
- [lacing.bodies.review](lacing.bodies.review.html.md): Body schema for review notes — the edit-loop’s communication channel.
- [lacing.bodies.review_candidate](lacing.bodies.review_candidate.html.md): Body schema for review *candidates* — “this needs a human’s eyes”.
- [lacing.bodies.word](lacing.bodies.word.html.md): Body schema for word-level annotations (e.g., transcription, forced alignment).
- [lacing.cli](lacing.cli.html.md): Command-line interface for lacing.
- [lacing.digest](lacing.digest.html.md): Content digests over an annotation’s *value* — the freshness primitive.
- [lacing.exhibit](lacing.exhibit.html.md): Artifact exhibit — render an annotation graph as a readable document.
- [lacing.model](lacing.model.html.md): Annotation envelope, references, and provenance.
- [lacing.oplog](lacing.oplog.html.md): Operation log for time-travel debug + audit.
- [lacing.otel](lacing.otel.html.md): Optional OpenTelemetry instrumentation for the lacing server.
- [lacing.processors](lacing.processors.html.md): Background processors — pluggable jobs that run against a store + op-log.
- [lacing.quality](lacing.quality.html.md): Inter-annotator agreement and boundary metrics.
- [lacing.schema](lacing.schema.html.md): Body schema registry, JSON Schema export, and migrations.
- [lacing.store](lacing.store.html.md): Interval-keyed annotation stores.
- [lacing.store.base](lacing.store.base.html.md): `IntervalAnnotationStore` — the headline Pythonic API.
- [lacing.store.locking](lacing.store.locking.html.md): Named exclusive locks for stores: the mechanisms behind `store.lock(key)`.
- [lacing.store.mapping](lacing.store.mapping.html.md): `MappingStore` — an `IntervalAnnotationStore` persisted to any `MutableMapping`.
- [lacing.store.memory](lacing.store.memory.html.md): In-memory annotation store backed by an interval tree.
- [lacing.store.migrations](lacing.store.migrations.html.md): Store-level schema migrations — the on-disk counterpart of the body ladder.
- [lacing.store.postgres](lacing.store.postgres.html.md): PostgreSQL-backed annotation store using `int8range` + GiST.
- [lacing.store.sqlite](lacing.store.sqlite.html.md): SQLite-backed annotation store and the `.annot` portable file format.
- [lacing.tier](lacing.tier.html.md): Tiers and the five ELAN stereotypes.
- [lacing.time](lacing.time.html.md): Rational time and half-open intervals — the foundations.
- [lacing.tracks](lacing.tracks.html.md): High-level “track-shaped” facades on top of `lacing`.
- [lacing.tracks.subtitle](lacing.tracks.subtitle.html.md): Subtitle / lyric / caption tracks — the (sections, lines, words) trio.
- [lacing.worker](lacing.worker.html.md): Optional Arq integration — queue processors through Redis.

## Optional

- [Top-level llms.txt](../llms.txt): Complete documentation index.