Implementation and documentation of \crfnmsetup

README.md

@@ -31,6 +31,9 @@ the labels they refer to appear in their document.
 It is written in Plain TeX as much as possible
 in order to make it compatible with a wide array of formats.
 For the moment, it works out of the box with ConTeXt and LaTeX.
+It only depends on [`expkv`](https://ctan.org/pkg/expkv-bundle)
+(but this dependency can be removed by deactivating
+the key-value configuration interface in favor of the native configuration macros).
 
 ## List of files