Table 1.

The content of the elnItemManifest

Element	Description	Qualifier	Notes
elnItemManifest	Definition of the ELN item manifest itself	UnitType	Allow a system to indicate the nature of the unit - i.e. multiple ELN records, an individual record, or a component of record, such as a spectrum or reaction.
		Package
		Record
		Component
Title	Short, human-readable, text string to assist when viewing this record in a list: helps the reader to determine whether record is of interest
Keywords	[Optional] Text strings that might assist in searching or categorising	KeywordSet	A list of terms
Identifiers	Unique handles that identify this record	IdentifierSet	Primary string, URI, or item in any other format that enables this record to be located uniquely in the originating system
		PrimaryLocalIdentifier
		OtherLocalIdentifier	[Optional] Alternative means of locating record in the originating system
		AccessIdentifier	[Optional] URI that provides a direct link to the content. If included, must be a ‘linked data’ URI giving open access
Contact	Specifies who or what to contact for more information.	ContactOption	Could be: e-mail address, system URI, or brief instruction. Expect to get some sensible reply when contacting this person or system with the localIdentifier specified.
		EMail
		SystemURI
		Instruction
LicensingBasis	[Optional] Indication of basis for licensing		e.g. Creative Commons
Contributors	List of contributory people, organisations, etc.	ContributorSet	For example, Author, Funding Body, PI, institution. Plain text, but name ideally complemented by unique identifiers
		ContributorInformation
		Role
		Name
Source	String describing the system that generated this data.		Generally identifies vendor, software package and version (resembles a browser user agent)
Date	One or more datestamps	DateSet	Dates on which this record was created; on which any embargo ends; for associated publication; or submission to conference, journal etc.
		CreationDate
		ReleaseDate
		PublicationDate
		SubmissionDate
RelatedItems	[Optional] List of items that might be related	RelatedItemSet	Nature of the related information, for example, publication or related work
		Relationship	ID can be any string, but DOI preferred if the related item is a publication. Zero or more item(s) of related information
		Id
Content	Items comprising the record that this describes	ContentInformation	A list that may comprise descriptions, file types and links to data