diff --git a/README.md b/README.md
index 4f0760a..3f18b1d 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 	% cd XML
 	% make
 
-You’ll need to have the XML Entity Resolver set up with a catalog that includes the generated `.xsl` files in this directory.
+You’ll need to have the XML Entity Resolver set up with a catalog that includes the generated `.xsl` files in this directory. The usual approach is to create somewhere (e.g., `~/Library/Catalogs` under Mac OS X) a `catalog.xml` file that includes URI mappings for all the local `.xsl` files, then create somewhere (e.g., `~/Library/Java`) a `CatalogManager.properties` file that tells the resolver where to find catalog files (both user and system). Ensure that `CatalogManager.properties` or more likely its containing directory is in your Java class path. See the `configuration` directory for examples of both these files that you can use as a template.
 
 To update: