For referring to data content defined in other formats.
= Must Support, = Is Modifier, = QiCore defined extension
| Field | Card. | Type | Description | 
|---|---|---|---|
| contentType | 0..1 | String | Identifies the type of the data in the attachment and allows a method to be chosen to interpret or render the data. Includes mime type parameters such as charset where appropriate. | 
| language | 0..1 | String | The human language of the content. The value can be any valid value according to BCP 47. | 
| data | 0..1 | String | The actual data of the attachment - a sequence of bytes. In XML, represented using base64. | 
| url | 0..1 | String | An alternative location where the data can be accessed. | 
| size | 0..1 | Integer | The number of bytes of data that make up this attachment (before base64 encoding, if that is done). | 
| hash | 0..1 | String | The calculated hash of the data using SHA-1. Represented using base64. | 
| title | 0..1 | String | A label or set of text to display in place of the data. | 
| creation | 0..1 | DateTime | The date that the attachment was first created. |