> For the complete documentation index, see [llms.txt](https://hyundai-robotics.gitbook.io/hi6-operation-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hyundai-robotics.gitbook.io/hi6-operation-manual/r-code.md).

# 8. R Codes

When it comes to the operating procedures for frequently used functions, such as modifying the contents of a program or changing the setting status of a controller, you can use them easily by designating specific service codes (R codes).

R codes are configured in the “R+No.” format, which combines R, representing Reset and Rapid, with a number.