“The utility allow the user to specify the patches in the surface mesh which shall be merge together.”

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~/work/TJU/freeCAD_prj/meshCase_simp_geo ❯ mergeSurfacePatches -help        tttt@tttt-cfd-ganggang 16:28:00

Usage: mergeSurfacePatches [OPTIONS] <input surface file> <new patch>
Options:
  -case <dir>       Case directory (instead of current directory)
  -keep
  -output <file name (default overwrite)>
  -patchIdRange <(start end)>
  -patchIds <list of patchIds>
  -patchNames <list of names>
  -doc              Display documentation in browser
  -help             Display short help and exit
  -help-full        Display full help and exit

(cfmesh)
Merge the supplied list of patches onto a single patch.

Using: OpenFOAM-v2406 (2406) - visit www.openfoam.com
Build: _630d60de3b-20240620
Arch:  LSB;label=32;scalar=64