: **hidiff()**
Outputs highlighted diff; needs highstring(1).
-: **ipv6-tunnel()**
-Sets up an IPv6 tunnel on interface sit1. Needs one argument -
-either "start", "stop" or "status".
-
: **is4()**
Returns true, if zsh version is equal or greater than 4, else false.
: **isutfenv()**
Returns true, if run within an utf environment, else false.
-: **iwclient()**
-Searches a wireless interface and runs dhclient(8) on it.
-
: **manzsh()**
Shows the zshall manpage and jumps to the first match of the regular
expression optionally given as argument (Needs qma(1)).