diff --git a/doc/HTML_VARIABLES b/doc/HTML_VARIABLES
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+++ b/doc/HTML_VARIABLES
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+There are several standard HTML variables that are available in every .html
+file:
+
+ request - The full HTTP request line.
+ cause - The abbreviated cause of the error condition.
+ clientip - The IP address of the client making the request.
+ clienthost - The hostname of the client making the request.
+ version - The version of tinyproxy.
+ package - Presently, resolves to 'tinyproxy'.
+ date - The current date/time in HTTP format.
+
+In addition, almost all pages support:
+
+ detail - A detailed, plain English explanation of the error and possible
+ causes. You might consider this the Microsoftian error message.
diff --git a/doc/debug.html b/doc/debug.html
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+
+
+
+Request failed - {cause}
+
+
+
+{cause}
+
+The request you made failed. Here are the error variables:
+
+request
+
+{request}
+
+cause
+
+{cause}
+
+clientip
+
+{clientip}
+
+clienthost
+
+{clienthost}
+
+version
+
+{version}
+
+package
+
+{package}
+
+date
+
+{date}
+
+detail
+
+{detail}
+
+url
+
+{url}
+
+
diff --git a/doc/default.html b/doc/default.html
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+++ b/doc/default.html
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+{cause}
+
+Cache Error!
+The following error has occured: {detail}
+
+Generated by {package} ({version})
+
diff --git a/doc/stats.html b/doc/stats.html
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+{package} ({version}) stats
+
+{package} ({version}) run-time statistics
+
+Number of open connections: {opens}
+Number of requests: {reqs}
+Number of bad connections: {badconns}
+Number of denied connections: {deniedconns}
+Number of refused connections due to high load: {refusedconns}
+