improve doc

BlochPeriodicWaveguides/rhombus.pro

@@ -277,7 +277,6 @@ PostOperation {
       Print[ step, OnPoint{0,0,0}, Format ValueOnly, File "res/step.txt", SendToServer "GetDP/Step"{0} ] ;
     }
   }
-
   { Name plot_h; NameOfPostProcessing Guide_h_2D;
     If(selectedEigenvalue >= 0)
       TimeValue selectedEigenvalue;
@@ -339,9 +338,10 @@ DefineConstant[
   // don't do the post-processing pass
   P_ = {"", Name "GetDP/2PostOperationChoices", Visible 0},
 
-  // plot real part of eigenvalues in terms of step (GetDP/Step is created in
+  // plot real part of eigenvalues in terms of step ("GetDP/Re(Omega)" is
+  // automatically created by the eigensolver; "GetDP/Step" is created in
   // post-processing in order to get the correct number of abscissa values --
   // which depends on the number of eigenvalues we compute)
   omega_ = {0, Name "GetDP/Re(Omega)", ReadOnly 1, Graph "01"},
-  step_ = {0, Name "GetDP/Step", ReadOnly 1, Graph "10", Visible 0}
+  step_ = {0, Name "GetDP/Step", ReadOnly 1, Graph "10"}
 ];