when are you going to add DOI as a duplicate search field ?

The Digital Object Identifier (“DOI”) has become the primary means by which articles of all ages are rapidly accessed on the web, thanks to dx.doi.org, the redirect website where you just enter the DOI and it takes you right to your article.  

It makes sense that EndNote should have the DOI as its default primary duplicate search field, at least to those of us in science.  Yet the field is not even available for duplicate search!

When will you implement this feature?