VRML 1.0 to VRML97 Converter for Mac OS X Description:

How it works

vrml1to97 [options] source [destination]

Source: specifies the file to be converted. To supply a file from standard input, specify a dash (-) for source.
Destination: specifies the filename for the new file. If omitted, standard output is assumed.

Options:
-o, --output=filename Uses filename for destination.
-w, --overwrite Overwrites an existing file.
-i, --indent="CHARS" Uses CHARS for indentation. The default is tab character.
-h, --help Displays a brief summary of vrml1to97 command-line syntax.
-v, --version Displays the version number.