| Name | Kind | Description |
| language | attribute | Mandatory indicator of the localised language in which this Composition is written. Coded from openEHR Code Set languages . The language of an Entry if different from the Composition is indicated in ENTRY.language. |
| language | attribute | Optional indicator of the localised language in which the data is written, if relevant. Coded from openEHR Code Set languages. |
| language | relation | Optional indicator of the localised language in which the value is written. Coded from openEHR Code Set languages . Only used when either the text object is in a different language from the enclosing ENTRY, or else the text object is being used outside of an ENTRY or other enclosing structure which indicates the language. |
| language | attribute | Mandatory indicator of the localised language in which this Entry is written. Coded from openEHR Code Set languages . |
| language | attribute | The localised language in which the items in this description item are written. Coded from openEHR Code Set languages . |
| language | attribute | Language of the translation. |
| languages_available | operation | Total list of languages available in this resource, derived from original_language and translations. |
| latest_trunk_version | operation | Return the most recently added trunk version. |
| latest_version | operation | Return the most recently added version (i.e. on trunk or any branch). |
| left_operand | relation | |
| LF | attribute | line feed character |
| lifecycle_state | operation | Lifecycle state of the content item in wrapped ORIGINAL_VERSION, derived as item.lifecycle_state. |
| lifecycle_state | attribute | Lifecycle state of the content item in this version. |
| lifecycle_state | operation | Lifecycle state of this version; coded by openEHR vocabulary version lifecycle state . |
| lifecycle_status | attribute | Lifecycle state of the resource, typically including states such as: initial, submitted, experimental, awaiting_approval, approved, superseded, obsolete. |
| limits | operation | Limits of the ordinal enumeration, to allow comparison of an ordinal value to its limits. |
| LINK | class | The LINK type defines a logical relationship between two items, such as two ENTRYs or an ENTRY and a COMPOSITION. Links can be used across composi- tions, and across EHRs. Links can potentially be used between interior (i.e. non archetype root) nodes, although this probably should be prevented in archetypes. Multiple LINKs can be attached to the root object of any archetyped structure to give the effect of a 1->N link. 1:1 and 1:N relationships between archetyped content elements (e.g. ENTRYs) can be expressed by using one, or more than one, respectively, DV_LINKs. Chains of links can be used to see problem threads or other logical groupings of items. Links should be between archetyped structures only, i.e. between objects representing complete domain concepts because relationships between sub-elements of whole concepts are not necessarily meaningful, and may be downright confusing. Sensible links only exist between whole ENTRYs, SECTIONs, COMPOSITIONs and so on. |
| LINK | artifact | |
| links | relation | Links to other archetyped structures (data whose root object inherits from ARCHETYPED, such as ENTRY, SECTION and so on). Links may be to structures in other compositions. |
| list | relation | Set of allowed DV_ORDINAL values. |
| list | relation | List of value/units pairs. |
| list | attribute | Set of Integers specifying constraint. |
| list | attribute | Set of Reals specifying constraint . |
| list | attribute | Set of Strings specifying constraint. |
| list_open | attribute | True if the list is being used to specify the constraint but is not considered exhaustive. |
| LOCATABLE | class | Root class of all information model classes that can be archetyped. Most classes in the openEHR reference model inherit from the LOCATABLE class, which defines the idea of locatability in an archetyped structure. LOCATABLE defines a runtime name and an archetype_node_id. |
| LOCATABLE | artifact | |
| LOCATABLE_REF | class | Purpose Reference to a LOCATABLE instance inside the top-level content structure inside a VERSION<T>; the path attribute is applied to the object that VERSION.data points to. |
| LOCATABLE_REF | artifact | |
| location | attribute | The actual location where the session occurred, e.g. microbiol lab 2 , home , ward A3 and so on. |
| location | attribute | Identifier of the particular site/facility within an organisation which handled the item. For computability, this identifier needs to be e.g. a PKI identifier which can be included in the identifier list of the PARTY_IDENTIFIED object. |
| logical_paths | operation | Set of language-dependent paths extracted from archetype. Paths obey the same syntax as physical_paths, but with node_ids replaced by their meanings from the ontology. |
| lower | relation | |
| lower | attribute | lower bound. |
| lower_included | attribute | lower boundary value included in range if not lower_unbounded. |
| lower_unbounded | attribute | lower boundary open (i.e. = -infinity) |