# \#reference-view

**URL:** https://forums.buildingsmart.org/tag/reference-view/37.md

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## [IfcSectionedSpine future](https://forums.buildingsmart.org/t/ifcsectionedspine-future/2816)

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**Author:** [@claimred](https://forums.buildingsmart.org/u/claimred)\
**Replies:** 1\
**Last updated:** [July 1, 2020, 11:45am UTC](https://forums.buildingsmart.org/t/ifcsectionedspine-future/2816 "2020-07-01T11:45:47Z")

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Various curves (IfcTrimmedCurve, IfcPolyLine) essentially are becoming deprecated and IfcIndexedPolyCurve being used everywhere. IfcSectionedSpined, on the other hand, uses umbrella class IfcCompositeCurve for its const…

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## [IFC4 RV1.2 Certification Requirements](https://forums.buildingsmart.org/t/ifc4-rv1-2-certification-requirements/212)

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**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\
**Replies:** 0\
**Last updated:** [August 4, 2018, 6:41am UTC](https://forums.buildingsmart.org/t/ifc4-rv1-2-certification-requirements/212 "2018-08-04T06:41:14Z")

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Hello everyone, The Software Certification team, along with Richard Petrie, have just released a letter to the vendor community regarding the requirements for the new testing regime for IFC4 Reference View 1.2. It can b…