Underscores are used to enclose text in italics; the three words that end this sentence _are in italics_. Equals signs are used to enclose text in bold face; the four words that end this sentence =are in bold face=.…
Or read it translated: 日本語 · 中文 · हिन्दी · Español · العربية · Français · বাংলা · Português · Русский · Bahasa Indonesia · اردو · Deutsch · Kiswahili · 한국어