** by Jean Roth , jroth@nber.org , 2014-10-10 Hex Octal Code Code To: Description ---- ----- ---- ---------------------- U+00AE \256 R ® Registered trademark symbol U+00B0 \257 deg ° Degree sign U+00B1 \261 +/- ± Plus-Minus Sign U+00B5 \265 mu µ Micro sign U+00BA \272 deg º degree symbol U+00BD \275 1/2 ½ Vulgar fraction one half U+00BF \277 ? ¿ Inverted question mark U+00C5 \304 A Ä Latin capital letter A with diaresis U+00C8 \310 E È Latin capital letter E with grave U+00C9 \311 E É Latin capital letter E with acute U+00CC \314 I Ì Latin capital letter I with grave U+00D6 \326 O Ö Latin capital letter ) with diaresis U+00DF \337 beta ß Latin small letter sharp s U+00DE \336 Þ Latin capital letter thorn U+00E4 \344 a ä a with umlaut mark or diaeresis Note on U+00BF ': FDA usage seemed to indicate ' rather than inverted question mark. Note on U+00DF ß: The ß symbol is used in the clia_detail.txt in chemical names to indicate position beta.