See comment above parent: > This happens for pure text[nb 2] but actual documents often contain enough spaces and line terminators, numbers (digits 0–9), and H

See comment above parent: > This happens for pure text[nb 2] but actual documents often contain enough spaces and line terminators, numbers (digits 0–9), and HTML or XML or wiki markup characters, that they are shorter in UTF-8. For example, both the Japanese UTF-8 and the Hindi Unicode articles on Wikipedia take more space in UTF-16 than in UTF-8.[nb 3]