Developer's-corner/Boundary-Conditions.md

 ## Choosing the boundaries conditions
 
+In the configuration file, set the property Disk.Boundaries with a coma separated list of names of the boundaries conditions you want to apply:
+```
+Disk {
+ ....
+ Boundaries reflectingZ,reflectingR
+ ....
+}
+```
+
 ## Adding new boundaries conditions
+
+Examples of boundaries condition can be found in the the [src/boundariesConditions.cpp](https://gitlab.oca.eu/DISC/fargOCA/blob/master/src/boundariesConditions.cpp).
+
+Adding a new boundary condition is a 2 step process, you need to:
+ 1. Implement the boundary condition code.
+ 2. Tell the system what is the name of that boundary condition.