I've run into several people in the Apple Support Communities confused by recent name changes implemented by Apple. These are
+Starting with OS X 10.10.3, the standard menu item for many years called "Edit > Special Characters" is now called "Edit > Emoji & Symbols"
+Starting with OS X 10.11.0, the input source for many years called "US Extended" is now called "ABC Extended".
+Starting with OS X 10.10.3, the standard menu item for many years called "Edit > Special Characters" is now called "Edit > Emoji & Symbols"
+Starting with OS X 10.11.0, the input source for many years called "US Extended" is now called "ABC Extended".