'none'
      Proxy configuration mode
      
        Select the proxy configuration mode. Supported values are "none", 
        "manual", "auto".
        If this is "none", then proxies are not used.
        If it is "auto", the autoconfiguration URL described by the
        "autoconfig-url" key is used.
        If it is "manual", then the proxies described by
        "/system/proxy/http", "/system/proxy/https",
        "/system/proxy/ftp" and "/system/proxy/socks" will be used.
        Each of the 4 proxy types is enabled if its "host" key is
        non-empty and its "port" key is non-0.
        If an http proxy is configured, but an https proxy is not,
        then the http proxy is also used for https.
        If a SOCKS proxy is configured, it is used for all protocols,
        except that the http, https, and ftp proxy settings override
        it for those protocols only.
      
    
    
      ''
      Automatic proxy configuration URL
      
        URL that provides proxy configuration values. When mode is
        "auto", this URL is used to look up proxy information for all
        protocols.
      
    
    
      [ 'localhost', '127.0.0.0/8', '::1' ]
      Non-proxy hosts
      
        This key contains a list of hosts which are connected to directly, 
        rather than via the proxy (if it is active). The values can be 
        hostnames, domains (using an initial wildcard like *.foo.com), IP host 
        addresses (both IPv4 and IPv6) and network addresses with a netmask 
        (something like 192.168.0.0/24).
      
    
    
      true
      Unused; ignore
      
        This key is not used, and should not be read or modified.
      
    
  
  
    
      false
      Unused; ignore
      
        This key is not used; HTTP proxying is enabled when the host
        key is non-empty and the port is non-0.
      
    
    
      ''
      HTTP proxy host name
      
        The machine name to proxy HTTP through.
      
    
    
      
      8080
      HTTP proxy port
      
        The port on the machine defined by "/system/proxy/http/host" that you 
        proxy through.
      
    
    
      false
      Authenticate proxy server connections
      
        If true, then connections to the proxy server require authentication. 
        The username/password combo is defined by 
        "/system/proxy/http/authentication-user" and 
        "/system/proxy/http/authentication-password".
        This applies only to the http proxy; when using a separate
        https proxy, there is currently no way to specify that it
        should use authentication.
      
    
    
      ''
      HTTP proxy username
      
        User name to pass as authentication when doing HTTP proxying.
      
    
    
      ''
      HTTP proxy password
      
        Password to pass as authentication when doing HTTP proxying.
      
    
  
  
    
      ''
      Secure HTTP proxy host name
      
        The machine name to proxy secure HTTP through.
      
    
    
      
      0
      Secure HTTP proxy port
      
        The port on the machine defined by "/system/proxy/https/host" that you 
        proxy through.
      
    
  
  
    
      ''
      FTP proxy host name
      
        The machine name to proxy FTP through.
      
    
    
      
      0
      FTP proxy port
      
        The port on the machine defined by "/system/proxy/ftp/host" that you 
        proxy through.
      
    
  
  
    
      ''
      SOCKS proxy host name
      
        The machine name to use as a SOCKS proxy.
      
    
    
      
      0
      SOCKS proxy port
      
        The port on the machine defined by "/system/proxy/socks/host" that you 
        proxy through.