In OpenVSP, a Mesh can come from a variety of sources including internal tools or as imports from other software. For example, CompGeom and CFDMesh will both create meshes but they will be quite different in their topology. A mesh imported from an external source may be from a CAD STL or even from a CFD grid. However, when importing from highly dense CFD grids be sure to downsample if needed to avoid crashing VSP. This tutorial will introduce some of the features of Meshes in OpenVSP and illustrate a few of the controls and features you have at your disposal.