A reduced description of a feed, used inside an entry's ⟨source⟩ element (Atom RFC 4287 §4.2.11).

When an entry is copied, mirrored, or aggregated from one feed into another, the receiving feed SHOULD preserve the originating feed's identity by including a ⟨source⟩ element on the entry. The ⟨source⟩ element carries enough metadata to recover the originating feed even if the entry is later detached from any feed document.

A consumer that re-encounters the same entry ⟨id⟩ in two different feeds can use ⟨source⟩ to disambiguate origin.

Atom ⟨id⟩ of the source feed. Conventionally urn:uuid:{uuid}. Same value as the originating feed's ⟨id⟩.

Atom ⟨title⟩ of the source feed.

Atom ⟨link⟩ elements from the source feed — typically the source feed's rel="self" link.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

link relation

media type

target URI

A reduced description of a feed, used inside an entry's ⟨source⟩ element (Atom RFC 4287 §4.2.11).

When an entry is copied, mirrored, or aggregated from one feed into another, the receiving feed SHOULD preserve the originating feed's identity by including a ⟨source⟩ element on the entry. The ⟨source⟩ element carries enough metadata to recover the originating feed even if the entry is later detached from any feed document.

A consumer that re-encounters the same entry ⟨id⟩ in two different feeds can use ⟨source⟩ to disambiguate origin.

Atom ⟨id⟩ of the source feed. Conventionally urn:uuid:{uuid}. Same value as the originating feed's ⟨id⟩.

Atom ⟨title⟩ of the source feed.

Atom ⟨link⟩ elements from the source feed — typically the source feed's rel="self" link.

link relation

media type

target URI

A reduced description of a feed, used inside an entry's ⟨source⟩ element (Atom RFC 4287 §4.2.11).

When an entry is copied, mirrored, or aggregated from one feed into another, the receiving feed SHOULD preserve the originating feed's identity by including a ⟨source⟩ element on the entry. The ⟨source⟩ element carries enough metadata to recover the originating feed even if the entry is later detached from any feed document.

A consumer that re-encounters the same entry ⟨id⟩ in two different feeds can use ⟨source⟩ to disambiguate origin.

Atom ⟨id⟩ of the source feed. Conventionally urn:uuid:{uuid}. Same value as the originating feed's ⟨id⟩.

Atom ⟨title⟩ of the source feed.

Atom ⟨link⟩ elements from the source feed — typically the source feed's rel="self" link.

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

link relation

media type

target URI