# I very well appreciate the concept of gbXML but why can't the features

Commenting post [277](/?blog/2016-277): I very well appreciate
the concept of gbXML but why can't the features
of gbXML be included in IFC? Why should one have a separate format for
energy & thermal analysis of a BIM model?

IFC2x3 has the provision of Structural Analysis Domain. Similarly,
there can be a domain for energy & thermal analysis too.
(www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/)

If the Autodesk is interfering here too. May be We can interfere
with IFC and add new parameters as per our requirement. I remember an
FB post at this instance once shared by you, "One who controls the
IFC, controls the Universe."