+** On the OS X Cocoa ("Nextstep") port, multicolor font (such as color
+emoji) display is disabled. This feature was accidentally added when
+Emacs 24.4 included the new Core Text based font backend code that was
+originally implemented for a non-mainline port. This will be enabled
+again once it is also implemented in Emacs on free operating systems.
+If some symbols, such as emoji, do not display, we suggest to install
+an appropriate font, such as Symbola; then they will be displayed,
+albeit without the color effects.
+