**run-help** is by default an alias to ''man'', and can be redefined to a function (in Functions/Misc) that will look in other places before invoking ''man''. It is bound to the key sequence: ALT-h (aka ESC-h).

The function can be further customized by defining helper functions of the form ''run-help-//command//''.  There are three such functions available in the standard distribution:  run-help-git, run-help-svk, and run-help-svn.

To make use of the more advanced function (and three helpers), insert the following into your ''.zshrc''
<code>
autoload -U run-help
autoload run-help-git
autoload run-help-svn
autoload run-help-svk
export HELPDIR=~/zsh_help
</code>

See the manual [[http://zsh.sourceforge.net/Doc/Release/User-Contributions.html#Accessing-On_002dLine-Help|here]] and [[http://zsh.sourceforge.net/Doc/Release/User-Contributions.html#index-run_002dhelp-1|here]] for more details.