option_file_name:

File name of options file (to overwrite default). $\;$
By default, the name of the Ipopt options file is "ipopt.opt" - or something else if specified in the IpoptApplication::Initialize call. If this option is set by SetStringValue BEFORE the options file is read, it specifies the name of the options file. It does not make any sense to specify this option within the options file. The default value for this string option is "".
Possible values:

• *: Any acceptable standard file name