: Access step-by-step answers for popular textbooks like those by Moro (Math) or Kanankina (Russian Language).

It seems there might be a typo in your request. "Shkola iuei" doesn't match a standard educational platform, but based on the context of "gdz onlain" (GDZ online), you are likely looking for (Ready Homework Solutions) for a specific school curriculum.

To get the most accurate "feature" or help, could you clarify the specific school program or textbook you are using?

: Optimized interfaces for quick viewing on smartphones during study sessions.

: Many sites now include video walkthroughs to help explain complex logic rather than just providing the final answer.

If you meant (School of the 21st Century) or a similar Russian educational program, here are the solid features you can find on top GDZ platforms: