+# +filter-client-headers
+# By default, filters only apply to the document content itself. This will
+# extend those filters to include the client's headers as well.
+#
+# +filter-server-headers
+# By default, filters only apply to the document content itself. This will
+# extend those filters to include the server's headers as well.
+#
+# +force-text-mode
+# Declares a document as plain text, even if the "Content-Type:" isn't detected
+# as such.
+#
+# +handle-as-empty-document
+# This action alone doesn't do anything noticeable. It just marks URLs. If
+# the block action also applies, the presence or absence of this mark
+# decides whether an HTML "blocked" page, or an empty document will be sent
+# to the client as a substitute for the blocked content.
+#
+# +hide-accept-language{lang}
+# +hide-accept-language{block}
+# Deletes or replaces the "Accept-Language:" HTTP header in client
+# requests.
+#
+# +hide-content-disposition{block}
+# +hide-content-disposition{string}
+# Deletes or replaces the "Content-Disposition:" HTTP header set by some
+# servers. This can be used to prevent download menus for content you
+# prefer to view inside the browser, for example.
+#