value is 0 - the command will be just shown but not executed.
+ Specify the path where the HTML documentation resides. File system paths
+ and URLs are supported. HTML pages will be prefixed with this path when
+ help is displayed in the 'web' format. This defaults to the documentation
+ path of your Git installation.
Override the HTTP proxy, normally configured using the 'http_proxy',
'https_proxy', and 'all_proxy' environment variables (see