It seems to work, but I don't think this is quite useful for the manuscript

src/modules/mesh/moduleMesh.f90

@@ -964,6 +964,7 @@ MODULE moduleMesh
     type(meshNodePointer), allocatable:: nodes(:)
 
     procedure(updateEM_interface), pointer, pass:: update => null()
+    procedure(printEM_interface),  pointer, pass:: print  => null()
     contains
       procedure(applyEM_interface), deferred, pass:: apply
 
@@ -987,6 +988,15 @@ MODULE moduleMesh
 
     end subroutine updateEM_interface
 
+    ! Write the values of the particle boundary model
+    subroutine printEM_interface(self, fileID)
+      import boundaryEMGeneric
+
+      class(boundaryEMGeneric), intent(inout):: self
+      integer, intent(in):: fileID
+
+    end subroutine printEM_interface
+
   end interface
 
   ! Extended types
@@ -1049,6 +1059,8 @@ MODULE moduleMesh
   ! Floating: Floating surface, ie, zero net current
   type, extends(boundaryEMGeneric):: boundaryEMFloating
     real(8):: potential
+    real(8):: invC ! Inverse of the capacitance of the surface
+    type(meshEdgePointer), allocatable:: edges(:) !Array with edges
     contains
       ! boundaryEMGeneric DEFERRED PROCEDURES
       procedure, pass:: apply => applyFloating
@@ -1097,6 +1109,10 @@ MODULE moduleMesh
 
     end subroutine boundariesEM_update
 
+    module subroutine boundariesEM_write()
+
+    end subroutine boundariesEM_write
+
   end interface
 
   ! PHYSICAL SURFACES LINKING TO MESH ELEMENTS