diff --git a/README.org b/README.org
index 9692cc2..d22c234 100644
--- a/README.org
+++ b/README.org
@@ -6,6 +6,140 @@
   [[https://github.com/ceronyon/LangEvolve/][Ceronyon]]. This tool is  a conlanging tool used to apply  sound change rules on
   words or text.
 
+* Differences with the original project
+  The main  difference with  the main  project resides  in its  settings format:
+  while  the  original project  only  supports  the  JSON format,  this  project
+  supports both the JSON and the Yaml formats. The settings are also represented
+  differently in  JSON between the  original project  and this one.  Lastly, the
+  regex crate used  in this project does not allow  certain expressions, such as
+  look-ahead and look-behind searches, and  backreferences. To get a better idea
+  of what  I am talking about,  here is the  example json given by  the original
+  project for Latin to Portugese:
+  #+BEGIN_SRC json
+    {
+      "version" : "1",
+      "categories" : {
+        "V" : "aeiou",
+        "L" : "āēīōū",
+        "C" : "ptcqbdgmnlrhs",
+        "F" : "ie",
+        "B" : "ou",
+        "S" : "ptc",
+        "Z" : "bdg"
+      },
+      "rules" : [
+        { "[sm]$" : "" },
+        { "i(%V)" : "j\\1" },
+        { "%L" : "%V" },
+        { "(%Vr)e$" : "\\1" },
+        { "(%V)v(%V)" : "\\1\\2" },
+        { "u$" : "o" },
+        { "gn" : "nh" },
+        { "(%V)p(?=%V)" : "\\1b" },
+        { "(%V)t(?=%V)" : "\\1d" },
+        { "(%V)c(?=%V)" : "\\1g" },
+        { "(%F)ct" : "\\1it" },
+        { "(%B)ct" : "\\1ut" },
+        { "(%V)pt" : "\\1t" },
+        { "ii" : "i" },
+        { "(%C)er(%V)" : "\\1r\\2" },
+        { "lj" : "lh" }
+      ]
+    }
+  #+END_SRC
+
+  And here is the JSON generated by this project (beautified, the original is on
+  one line only without unnecessary whitespace):
+  #+BEGIN_SRC json
+    {
+        "version": "1",
+        "categories": [
+            ["V", "aeiou"],
+            ["L", "āēīōū"],
+            ["C", "ptcqbdgmnlrhs"],
+            ["F", "ie"],
+            ["B", "ou"],
+            ["S", "ptc"],
+            ["Z", "bgd"]
+        ],
+        "rules": [
+            ["[sm]$", ""],
+            ["i(?P<v>%V)", "j$v"],
+            ["%L", "%V"],
+            ["(?P<v>%Vr)e$", "$v"],
+            ["(?P<b>%V)v(?P<a>%V)", "$b$a"],
+            ["u$", "o"],
+            ["gn", "nh"],
+            ["(?P<b>%V)p(?P<a>%V)", "$vb$a"],
+            ["(?P<b>%V)t(?P<a>%V)", "$bd$a"],
+            ["(?P<b>%V)c(?P<a>%V)", "$bg$a"],
+            ["(?P<f>%F)ct", "$fit"],
+            ["(?P<b>%B)ct", "$but"],
+            ["(?P<v>%V)pt", "$vt"],
+            ["ii", "i"],
+            ["(?P<c>%C)er(?P<v>%V)", "$cr$v"],
+            ["lj", "lh"]
+        ]
+    }
+  #+END_SRC
+
+  By the way, here is the Yaml equivalent generated by this project:
+  #+BEGIN_SRC yaml
+    ---
+    version: "1"
+    categories:
+      - - V
+        - aeiou
+      - - L
+        - āēīōū
+      - - C
+        - ptcqbdgmnlrhs
+      - - F
+        - ie
+      - - B
+        - ou
+      - - S
+        - ptc
+      - - Z
+        - bgd
+    rules:
+      - - "[sm]$"
+        - ""
+      - - i(?P<v>%V)
+        - j$v
+      - - "%L"
+        - "%V"
+      - - (?P<v>%Vr)e$
+        - $v
+      - - (?P<b>%V)v(?P<a>%V)
+        - $b$a
+      - - u$
+        - o
+      - - gn
+        - nh
+      - - (?P<b>%V)p(?P<a>%V)
+        - $vb$a
+      - - (?P<b>%V)t(?P<a>%V)
+        - $bd$a
+      - - (?P<b>%V)c(?P<a>%V)
+        - $bg$a
+      - - (?P<f>%F)ct
+        - $fit
+      - - (?P<b>%B)ct
+        - $but
+      - - (?P<v>%V)pt
+        - $vt
+      - - ii
+        - i
+      - - (?P<c>%C)er(?P<v>%V)
+        - $cr$v
+      - - lj
+        - lh
+  #+END_SRC
+
+  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]].
+
 * License
   LangEvolveRs is  licensed under the  AGPLv3 license.  The full license  can be
   found [[file:agpl-3.0.txt][here]].