diff --git a/Duplicates/README.md b/Duplicates/README.md
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@@ -0,0 +1,5 @@
+# The traits in these folders are OpenRA trait duplicates.
+
+This means they are edited traits - might be even outdated variants - of their OpenRA equvivalents, with some minor changes involved. Might not even work with everything their base traits work with properly.
+
+Avoid using them unless you are explicitly sure the changed traits are exactly what you're looking for.
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diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -4,6 +4,6 @@ While the logics might be written with one mod in mind, the repository's aim is
 
 The repository will be aimed against the bleed version of OpenRA. Playtest-compatible versions might be tagged though. Release-specific versions probably not - although probably the last playtest of that release cycle will work with them.
 
-For specific mod logic authors, refer the AUTHORS file. The repository's code is under the GPL3 license. All code uploaded into this repository follows the OpenRA code standard and was evaulated by StyleCop.
+For specific mod logic authors, refer the AUTHORS file. The repository's code is under the GPLv3 license. All code uploaded into this repository follows the OpenRA code standard and was evaulated by StyleCop.
 
 Do not ask about the mod here. This is a strict code repository. You can follow Attacque Supérior at http://www.moddb.com/mods/attacque-suprior or https://www.facebook.com/AttacqueSuperior.