2D meshing- Midsurface

Hi,

After viewing the 2D meshing web tutorials, I have a question regarding the midsurface.

Do we always need to do the midsurface for 2D meshing? Can we just keep the original geometry and mesh it?

As I am new to Hypermesh and learning 2D meshing, I am trying to outline the general steps.

Thanks,

Hoa