该文件为二维网格划分程序，网格划分是数值模拟软件的前处理部分，他决定了数值模拟过程的时间和计算结果的精度。
WHAT'S NEW IN v2.3?
MESH2D v2.3 allows connected polygons to be meshed, with a compatible mesh generated along internal boundaries. MESH 2D v2.3 should also produce meshes with a higher mean element quality in most cases.
- MESH2D can produce large scale meshes, with meshes incorporating over 500,000 elements produced based on satellite coastline data.
- MESH2D allows fully user defined size functions, giving the user full control over mesh resolution if desired. A template for boundary layer regions is also included.
- MESH2D includes functions for uniform and non-uniform mesh refinement, allowing existing meshes to be refined without costly re-triangulation.
- MESH2D includes functions to assemble the connectivity information necessary for FE or FV methods.