--- a
+++ b/devel/example/Ficticious_Domain/Steady_state/no_slip_bc/Err_p.ufl
@@ -0,0 +1,6 @@
+P0  = FiniteElement("DG", triangle, 0)
+
+p = Coefficient(P0)
+p0 = Coefficient(P0)
+
+M = ((p-p0)*(p-p0))*dx