Adding the FAQ entry for zsh.

Thanks Roberto E. Vargas Caballero! You were committing this patch against the
wrong version of the FAQ, so I had to rewrite it.

FAQ

@@ -56,13 +56,13 @@ sequences.
 But buggy applications like bash and irssi for example don't do this. A fast
 solution for them is to use the following command:
 
-	$ echo ^[?1h^[= >/dev/tty
+	$ printf "\033?1h\033=" >/dev/tty
 
 or
 	$ echo $(tput smkx) >/dev/tty
 
-In the case of bash it is using readline, which has a different not in its
-manpage:
+In the case of bash readline is used. Readline has a different note in its
+manpage about this issue:
 
 	enable-keypad (Off)
 		When set to On, readline will try to enable the
@@ -71,5 +71,25 @@ manpage:
 
 Adding this option to your .inputrc will fix the keypad problem for all
 applications using readline.
+
+If you are using zsh, then read the zsh FAQ
+(http://zsh.sourceforge.net/FAQ/zshfaq03.html#l25):
+
+	It should be noted that the O / [ confusion can occur with other keys
+	such as Home and End. Some systems let you query the key sequences
+	sent by these keys from the system's terminal database, terminfo.
+	Unfortunately, the key sequences given there typically apply to the
+	mode that is not the one zsh uses by default (it's the "application"
+	mode rather than the "raw" mode). Explaining the use of terminfo is
+	outside of the scope of this FAQ, but if you wish to use the key
+	sequences given there you can tell the line editor to turn on
+	"application" mode when it starts and turn it off when it stops:
+
+		function zle-line-init () { echoti smkx }
+		function zle-line-finish () { echoti rmkx }
+		zle -N zle-line-init
+		zle -N zle-line-finish
+
+Putting these lines into your .zshrc will fix the problems.
 --