diff --git a/installer/resources/proxy/README.txt b/installer/resources/proxy/README.txt
new file mode 100644
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+Note to translators and editors:
+
+These are the error pages displayed in the HTTP proxy,
+with the HTTP headers prepended.
+
+All files in this directory must be DOS formatted with \r\n line endings,
+so the HTTP header lines are standards-compliant. Thank you.