# New EHR reference model draft

**URL:** https://discourse.openehr.org/t/new-ehr-reference-model-draft/12010
**Category:** Technical (archive)
**Created:** [15 August 2002 13:05 UTC](https://discourse.openehr.org/t/new-ehr-reference-model-draft/12010 "2002-08-15T13:05:28Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![thomas.beale](https://discourse.openehr.org/user_avatar/discourse.openehr.org/thomas.beale/32/35_2.png) [@thomas.beale](https://discourse.openehr.org/u/thomas.beale)
#### Post date: [15 August 2002 13:05 UTC](https://discourse.openehr.org/t/new-ehr-reference-model-draft/12010/1 "2002-08-15T13:05:28Z")

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Dear all,

a new draft of the openEHR EHR reference model is available at [http://www.deepthought.com.au/health/openEHR/rm/ehr\_rm\_3\_3\_1.pdf](http://www.deepthought.com.au/health/openEHR/rm/ehr_rm_3_3_1.pdf).

While there is still a lot of work to do, the models are solid enough to start being used. The main change from previous versions is the addition of a Change\_control cluster to define the semantics of versioning generically, and the use of these semantics for versioning of Transactions.

All comments welcome.

- thomas beale