The Tetrahedral Mesh and Polyhedral Mesh parts of this tutorial that follow require exactly the same problem set-up. To avoid having to repeat the steps outlined in the current description, we will record a macro file. This macro will be used to set up the cases for the other two meshes.
All actions performed from now until the recording is stopped will be recorded in the macro. Note that you should not save the simulation whilst the macro is being recorded since this will lead to the subsequent simulations being saved under incorrect names.
The next step is Renaming the Region.
(Start Recording) button in the Macro toolbar.