# Glossary Address : A string naming a node, optionally pinned to a hash and narrowed to a span: `key#id@hash6[start:end]`. Alias : A legacy ID kept so that old references still lead to the node that now holds their text. Align key : A hash of a node's lossy projection, used only to propose that two readings hold the same sentence. Anchor : The stored form of a pinned address, with its quotation and context, that resolves as current, changed below, moved, reattached or stale. Asset store : Where a team keeps files by SHA-256: witnesses, images, crops and withheld text. Bundle : One SQLite file with every table and a full-text index, which readers, servers and MCP servers query. Changed below : The resolution of an anchor on a container that is unchanged in itself while something inside it changed. Correction : An operation on an established document, with its evidence and author; never edited, only appended. Document : The text established for one version of one work, as a tree of nodes. Drift : How much has changed below a container since an anchor on it was made, counted from the corrections. Exercise : An annotation whose body holds a prompt, an answer key of anchors or a value, and a grading rule. Fidelity level : How far a leaf's text was checked against its source, from F0 converted to F3 proofread. Keyed hash : A content value computed as an HMAC under a team key or a key derived from page fingerprints, so a short text cannot be recovered by hashing guesses. Layer : A named set of annotations with one purpose, audience, visibility and license. Leaf : A node that holds text itself: a sentence, cell, reference, author line, keyword line, equation, equation line, code or algorithm. Lossy projection : A node's text with scripts flattened, citation marks, whitespace and dashes removed, and case folded; used for proposing alignments. Match hash : A hash of a node's strict projection; equal match hashes are what corroboration requires. Node : An addressable part of a document: a section, paragraph, sentence, figure, panel, caption, table, row, cell, equation, footnote, reference and the rest. Own hash : A hash of a node's own content without its children, used to judge anchors on containers. Package : A document as a folder of canonical JSON files with a manifest whose hash pins them all. Page fingerprint : A hash of a page's size, its text with download stamps removed, and its images, so that differently stamped downloads share their pages. Plain projection : A node's text as one string, on which offsets, quotations and text hashes are defined. Policy : A project owner's signed decision that settles rights a record leaves unknown. Project : A team's curated set of documents, with its members, layers, data, reading paths and drafts. Receipt : One signature over a Merkle root of what a person reviewed in a sitting, which sets the level of what it lists. Revision : The index of the last correction applied to a document; anchors and receipts record it. Revocation : A signed record that withdraws a receipt, or every receipt by one signer in a period. Rights record : A witness's license, the basis on which the team holds it, and the uses that basis allows. Roster : The list of keys that may sign, with their owners and purposes. Spot-check : A second reviewer's check of a sample of a receipt's nodes, drawn from a seed nobody can steer. Stamp rule : A pattern that recognizes a publisher's download stamp in a page's text, so that fingerprints ignore it. Strict projection : A node's text with notation folded to one canonical form and structure kept; used for certifying agreement. Suspect : A doubtful reading raised for a person or a review session to answer. Targeted F3 : Proofreading the nodes a team's claims, quotations and datasets rest on, rather than every node. Text policy : Whether a package carries its text (`full`) or withholds it (`checks-only`). Verdict : A judgment of whether a cited passage supports a citing sentence: supports, partly, does not, or cannot tell. Version : One expression of a work: a preprint, the version of record, an erratum, the Supporting Information. Witness : One file of one version of a work, identified by its SHA-256. Work : A piece of scholarship across all its versions.