Developer's-corner/Boundary-Conditions.md

@@ -39,13 +39,13 @@ One way of implementing such condition is to define a new function:
  }
 ```
 
-You can have a look to the already implemented conditions in [src/boundariesConditions.cpp](https://gitlab.oca.eu/DISC/fargOCA/blob/master/src/boundariesConditions.cpp): `ComputeReflectingZ`, `OpenBoundaryR` etc.
+You can have a look to the already implemented conditions in [src/D3/boundariesConditions.cpp](https://gitlab.oca.eu/DISC/fargOCA/blob/master/src/D3/boundariesConditions.cpp): `ComputeReflectingZ`, `OpenBoundaryR` etc.
 
 ### Declaring a stateless boundaries condition
 
 Let say you want to make your new condition available under the name "someGreatBC":
 
-In a carefully chosen source file ([src/boundariesConditions.cpp](https://gitlab.oca.eu/DISC/fargOCA/blob/master/src/boundariesConditions.cpp) for example):
+In a carefully chosen source file ([src/D3/boundariesConditions.cpp](https://gitlab.oca.eu/DISC/fargOCA/blob/master/src/D3/boundariesConditions.cpp) for example):
 
 ```
 ...
@@ -60,3 +60,12 @@ In a carefully chosen source file ([src/boundariesConditions.cpp](https://gitlab
 
 ```
 You're done.
+
+## Tips
+
+### Factorize
+
+It's possible to apply any number of boundaries conditions, so instead of replicating common code, make it an independent conditions and call them as needed.  (need details ?)
+
+### 
+