Access Conditions: restrictions on researchers' access to archives, due to a legal or other closure period, or because damage or fragility makes archives unfit for production.

Administrative History: information about the history of an organisation, family or individual who is or was the creator of archives.

Architectural drawing: this general term is used for drawings that document the construction and / or design of buildings and other structures, whether the project was executed or not e.g. Dams or aqueducts.

Archival History: information about the history of archives - such as former ownership, storage or custody.

Archives: records in any format and of any date, created by individuals, families or organisations in the course of their activities or business, and preserved permanently.

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Closure Period: a period of time when archives are held in a repository but are not yet available for public access and consultation, for legal or privacy reasons. Some categories of archives, which are less than 100 years old, may be covered by a closure period (’closed’). If closure periods exist, details are usually given in the Virtual Waterways catalogues.

Creation Dates: the date or dates when archives were created. If it is unknown, this may be indicated in a catalogue by terms like 'undated', 'no date' or ' nd '. If a copy of a document is described in a catalogue, the creation date given is generally the date when the copy was made; the original dates will also be given.

Creator: in archive catalogues, the name of the organisation, family or individual responsible for creating or accumulating archives.

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Engineering drawings: this general term is used for all other drawings that are intended for constructional or technical purposes, and that follow precise conventions of scale and projection.

Extent and Form: information in a catalogue about the quantity, bulk or size of all or some of the archives described in that catalogue.

Finding Aid: a catalogue, index or list describing archives, intended to help researchers find what they need.

Fonds: all the archives created or accumulated by a specific person, family or organisation, also known as a collection.

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Hydrographical chart: a flat representation of underwater space and features intended to exhibit the relative position and size of the represented thing’s parts. Example: Hydrographical soundings showing underwater profile of a waterway.

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Map: a flat representation of the earth or some part of it with its physical or political features, normally shown to scale, but with an inherent degree of generalisation. This project will normally regard maps as having a scale smaller than 1:2500.

Nautical chart: a flat representation of water space or some part of it with its physical or political features normally shown to scale. Example: "Chart of the Approaches to the Caledonian Canal".

Nd: stands for ’no date’. This may appear in a catalogue when the creation dates of archives are unknown.

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Plan: a larger-scale map or chart intended to accurately show the relative position and size of the represented thing’s parts to scale on a horizontal plane, with a minimum of generalisation. This project will normally regard plans as having a scale of 1:2500 or larger.

Production: the term used to describe the retrieval of archives from storage for research use. Archives may not be fit for production if they are damaged or fragile. Individual files, volumes, boxes or documents may be treated as ’producible units’ by a repository.

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Repository: a record office, archives unit, library or other institution where archives are held, cared for and made available for researchers and members of the public.

Scope and Content: information in a catalogue summarising what all or some of the archives described in that catalogue are about. Scope and Content may include details on relevant time periods, subject matter, documentary forms or administrative processes. It may also include details of people or places mentioned in archives.

Series: part of an archival fonds. Archive documents maintained as a unit because they result from the same activity or filing process or have a particular form; or because of some other relationship arising from their creation, accumulation or use.

Sub-fonds: part of an archival fonds. All the documents created by a specific part of the organisation which created the fonds; or corresponding to geographical, chronological, functional or other groupings.

Sub-series: part of an archival series, consisting of closely related documents.

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Vessel drawings: this general term is used for drawings that specify the structure or arrangement of a vessel, or parts thereof, either as a proposal, for construction, or as measured drawings made of an existing vessel.

Virtual Archive Catalogue Project: original name of the project before it was changed to Virtual Waterways.

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