--- wget.1.orig			2012-08-01
+++ wget.1			2012-08-01
@@ -1842,6 +1842,14 @@
 Do not ever ascend to the parent directory when retrieving recursively.
 This is a useful option, since it guarantees that only the files
 \&\fIbelow\fR a certain hierarchy will be downloaded.
+.SH "ENVIRONMENT VARIABLES"
+.IX Header "ENVIRONMENT VARIABLES"
+.IP "\fBhttp_proxy / https_proxy\fR" 4
+If set, the http_proxy and https_proxy variables should contain the urls of the proxies for http and https connections respectively.
+.IP "\fBftp_proxy\fR" 4
+This variable should contain the url of the proxy for ftp connections. It is quite common that http_proxy and ftp_proxy are set to the same url.
+.IP "\fBno_proxy\fR" 4
+This variable should contain a comma-separated list of domain extensions proxy should not be used for. For instance, if the value of no_proxy is `.mit.edu', proxy will not be used to retrieve documents from MIT.
 .SH "FILES"
 .IX Header "FILES"
 .IP "\fB/usr/local/etc/wgetrc\fR" 4