diff --git a/README.org b/README.org
index 79a0a96..fbcc866 100644
--- a/README.org
+++ b/README.org
@@ -49,8 +49,8 @@
   #+END_SRC
 
   As you  can see, backreferences have  their syntax modified from  ~\1~ to ~$1~
-  for instance, and look-ahead and  look-behind expressions must be incorporated
-  into the expression.
+  (or ~${1}~ if it is followed by  other stuff) for instance, and look-ahead and
+  look-behind expressions must be incorporated into the expression.
 
   And here is the JSON generated by this project (beautified, the original is on
   one line only without unnecessary whitespace):
@@ -185,6 +185,13 @@
   You can  find more  information on  how to use  regular expressions  with this
   project in the documentation of the regex crate [[https://docs.rs/regex/1.3.6/regex/][here]].
 
+  The settings schema is set to  be fully backward-compatible. This means if the
+  version number goes  up in the settings file, older  settings file will remain
+  compatible with newer versions of the software. However, forward compatibility
+  cannot be  ensured unless  someone invents time  travel, hence  settings files
+  with  a higher  version  than  the running  software’s  will be  automatically
+  rejected.
+
 * License
   LangEvolveRs is  licensed under the  AGPLv3 license.  The full license  can be
   found [[file:agpl-3.0.txt][here]].