Multiple characters to render: it would be impractical to manually define character by character all substitution rules for rendering, so we can create glyphs that combine multiple literals (e.g. mnemonics like CALL), however this also ties to the next point...
Фото: Sergey Elagin / Global Look Press，这一点在新收录的资料中也有详细论述
fn main() - int {，推荐阅读新收录的资料获取更多信息
For completeness: