of the character with that of HTML 4. Other commands for marking hyphenation opportunities in text formatting languages (similar to the HTML 4 and Unicode 4.0 interpretation of SHY): troff and groff: \%. TeX and LaTeX: \- Security issues Soft hyphens, like other invisible characters, have been used to obscure malicious domains or URLs in e-mail spam. See also Hard hyphen Non-breaking space Word divider Word joiner Zero-width space Word wrap References Punctuation Typography Control characters Whitespace Unicode formatting code points