-This script runs in dry-run mode by default. Use --update to actually change,
-remove, or add files to resources/lib/.
+Use the "verify" action to verify the files currently in the resources directory match
+what "update" would replace them with. This is effectively a dry-run and will not change
+any module resources on disk.
+
+Use the "make-sri" action to compute an integrity hash for upstreams that do not publish
+one themselves. Add or update the urls foreign-resources.yaml as needed, but omit (or
+leave empty) the "integrity" key. Then, run the "make-sri" action for the module and
+copy the integrity into the file. Then, you can use "verify" or "update" normally.