+# Examples:
+#
+# # Increase the time to life for temporarily enabled tags to 3 minutes
+# client-tag-lifetime 180
+#
+#
+#
+# 6.18. trust-x-forwarded-for
+# ============================
+#
+# Specifies:
+#
+# Whether or not Privoxy should use IP addresses specified with
+# the X-Forwarded-For header
+#
+# Type of value:
+#
+# 0 or one
+#
+# Default value:
+#
+# 0
+#
+# Notes:
+#
+# +-----------------------------------------------------+
+# | Warning |
+# |-----------------------------------------------------|
+# |This is an experimental feature. The syntax is likely|
+# |to change in future versions. |
+# +-----------------------------------------------------+
+#
+# If clients reach Privoxy through another proxy, for example a
+# load balancer, Privoxy can't tell the client's IP address from
+# the connection. If multiple clients use the same proxy, they
+# will share the same client tag settings which is usually not
+# desired.
+#
+# This option lets Privoxy use the X-Forwarded-For header value
+# as client IP address. If the proxy sets the header, multiple
+# clients using the same proxy do not share the same client tag
+# settings.
+#
+# This option should only be enabled if Privoxy can only be
+# reached through a proxy and if the proxy can be trusted to set
+# the header correctly. It is recommended that ACL are used to
+# make sure only trusted systems can reach Privoxy.
+#
+# If access to Privoxy isn't limited to trusted systems, this
+# option would allow malicious clients to change the client tags
+# for other clients or increase Privoxy's memory requirements by
+# registering lots of client tag settings for clients that don't
+# exist.
+#
+# Examples:
+#
+# # Allow systems that can reach Privoxy to provide the client
+# # IP address with a X-Forwarded-For header.
+# trust-x-forwarded-for 1
+#
+#
+#
+# 6.19. receive-buffer-size
+# ==========================
+#
+# Specifies:
+#
+# The size of the buffer Privoxy uses to receive data from the
+# server.
+#
+# Type of value:
+#
+# Size in bytes
+#
+# Default value:
+#
+# 5000
+#
+# Notes:
+#
+# Increasing the receive-buffer-size increases Privoxy's memory
+# usage but can lower the number of context switches and thereby
+# reduce the cpu usage and potentially increase the throughput.
+#
+# This is mostly relevant for fast network connections and large
+# downloads that don't require filtering.
+#
+# Reducing the buffer size reduces the amount of memory Privoxy
+# needs to handle the request but increases the number of
+# systemcalls and may reduce the throughput.
+#
+# A dtrace command like: "sudo dtrace -n 'syscall::read:return /
+# execname == "privoxy"/ { @[execname] = llquantize(arg0, 10, 0,
+# 5, 20); @m = max(arg0)}'" can be used to properly tune the
+# receive-buffer-size. On systems without dtrace, strace or
+# truss may be used as less convenient alternatives.
+#
+# If the buffer is too large it will increase Privoxy's memory
+# footprint without any benefit. As the memory is (currently)
+# cleared before using it, a buffer that is too large can
+# actually reduce the throughput.
+#
+# Examples:
+#
+# # Increase the receive buffer size
+# receive-buffer-size 32768
+#
+#