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| PROTOCOL_proxy
|     Lynx supports the use of proxy servers that can act as firewall
|     gateways and caching servers.  They are preferable to the older
|     gateway servers (see WWW_access_GATEWAY, below).  Each protocol
|     used by Lynx, (http, ftp, gopher, etc), can be mapped separately
|     by setting environment variables of the form PROTOCOL_proxy
|     (literally: http_proxy, ftp_proxy, gopher_proxy, etc), to
|     "http://some.server.dom:port/".  See Lynx Users Guide for
|     additional details and examples.