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@@ -141,12 +141,12 @@ in July 2014 the number is the same.
 
 ## Licences used for CERN Open Hardware designs
 
-CERN uses the following licences for most Open Hardware designs:
+For each project, there may be reasons to lean towards a permissive, weakly reciprocal or strongly reciprocal licence. These can include the wishes of collaborators, CERN guidelines and legal constraints imposed by components used in a given design. These are some informal guidelines for CERN designers wishing to release their work as Open Hardware:
 
 ### Hardware
 
   - [CERN Open Hardware Licence - CERN
-    OHL](https://www.ohwr.org/project/cernohl/wiki) 
+    OHL](https://www.ohwr.org/project/cernohl/wiki) Version 2 includes three variants: P (permissive), W (weakly reciprocal) and S (strongly reciprocal). Notice that S assumes your component libraries are also released under S or a compatible licence. For designs in which this is not the case (e.g. designs using the CERN Altium library), S cannot be used. W is then a good compromise.
 
 ### Software