In addition to -r, RC offers two other command-line options: -cp and -cc. The -cp option lets you specify a code-page identifier or DBCS lead byte information. The -cc option lets you specify a country code. The syntax is as follows:
-cp {codepage-id | lead-byte-start, lead-byte-end,...}
-cc country-code
The lead-byte-start and lead-byte-end fields give the lower and upper limits of each interval of DBCS lead bytes which you are defining for the code page. The valid range for the lower and upper limit is 128 to 255. The number values in the pair should be separated by a comma. You may specify these values instead of a codepage-id. For example:
-cp 140,150
The codepage-id or country-code field contains a valid code page or country code. For a complete list of supported code pages and country codes, see the code page table under COUNTRYCODE in the online book OS/2 Warp Control Program Programming Guide and Reference.