Color might not be available, like here in HN comments. In older texts, the <angle-brackets> convention was common, but became less so probably due the emergen

Color might not be available, like here in HN comments. In older texts, the <angle-brackets> convention was common, but became less so probably due the emergence of HTML. Nowadays, I most commonly see the $SHELL_VARIABLE convention. Man pages use UPPERCASE_ITALICS (or uppercase underlined on terminals).