gdxmerge: Merge GDX files
GDXMERGE         47.4.1 4b675771 Aug 13, 2024          DAC arm 64bit/macOS    

Usage:
   gdxmerge filepat1 filepat2 ... filepatn
     Optional parameters:
          id=ident1, ident2: Merge specified IDs only
          exclude=ident1, ident2: Do not merge specified IDs
          big=<integer>    : Size indicator for a large symbol
          output=filename  : Output file; merged.gdx by default
          strict=true/false: Terminate on failure, e.g. missing input files
Filepat represents a filename or a file pattern.
The form: @filename will process parameters from that file
