During the simulation, OM2p and OM3p calculate the solution on a series of meshes. All of these meshes can be viewed by the user via mesh annotations; for information on how to create a mesh annotation, see “Annotations”. In general, the set of meshes will contain the volumetric meshes used for the entire AMR process. It can be useful to look at mesh annotations to ensure the system is numerically represented as intended. For example, if the curvature refinement is set too low, curved surfaces may be poorly represented in the mesh, and this is seen by looking at a mesh annotation.