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These options you can find in the installation directory (help documentation) of the software.
For example...Creo 3.0\%datacode%\Common Files\help\reference\pma\usascii\configoptions.pdf
These configuration options you can use for the application while editing your config.pro file. The most used options have a link to the description with values for the option.
Note: The options from binary code are marked as (hidden). The hidden options was found in the binary code of the application Pro/ENGINEER and Creo Parametric. The hidden options are usually provided for internal use, by the IT department of PTC during the development of new releases. Be carefull using these options, because they are unsupported, and might make your system unstable or your models corrupt.
Best regards,
Vladimir