Manu: saving corrections

Response_Letter/Response_Letter.tex

@@ -37,7 +37,24 @@ We look forward to hearing from you.
 	\item 
 	{They should comment about what is needed (or even if it is possible) to develop a weight-dependent universal xc functional for eDFT calculations instead of application-specific functionals as presented in this paper.}
 	\\
-	\alert{bla bla bla}
+	\alert{This is a good point. For clarity, we complemented the
+theory section as follows.\\
+{\it 
+``As shown in Sec. IV A 4, the weight dependence of the correlation
+energy can be extracted from a FUEG model. In order to make the
+resulting weight-dependent correlation functional truly universal, i.e.
+independent on the number of electrons in the FUEG, one could use the
+curvature of the Fermi hole [88] as an additional variable in the
+density-functional approximation. The development of such a generalized
+cor- relation eLDA is left for future work. Even though a similar
+strategy could be applied to the weight-dependent exchange part, we
+explore in the present work a different path where the
+(system-dependent) exchange functional parameterization relies on the
+ensemble energy linearity constraint (see Sec. IV A 2). Finally, let us
+stress that, in order to further improve the description of the ensemble
+correlation energy, a post-treatment of the recently revealed
+density-driven correlations [62,92-94] (which, by construction, are absent from FUEGs) might be necessary. An orbital-dependent correction derived in Ref. 92 might be used for that purpose. Work is currently in progress in this direction.
+''}}
 
 	\item 
 	{In the captions of Figures 1 and 2 replace "functional's" with "functionals'"}