If nothing was unclear or difficult, say so. Skip questions about steps you did not experience; use not applicable where appropriate.

Which instruction needed explanation?
What symbol was unfamiliar?
What source would help verify details?

Author notes / illustrative keys where applicable:
1. Read for instruction clarity. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.
2. Read for symbol meaning. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.
3. Read for verification. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.