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-rw-r--r--README10
1 files changed, 6 insertions, 4 deletions
diff --git a/README b/README
index 1d1d537..a6a5db8 100644
--- a/README
+++ b/README
@@ -69,10 +69,12 @@ that receives a "<<" method:
 * $request_uri - the URI requested ($path_info?$query_string)
 * $request - the first line of the HTTP request
   ($request_method $request_uri $http_version)
-* $request_time, $request_time{PRECISION} - time taken for request
-  (including response body iteration).  PRECISION defaults to 3
-  (milliseconds) if not specified but may be specified anywhere from
-  0(seconds) to 6(microseconds).
+* $request_time, $request_time{PRECISION}, $request_time{POWER,PRECISION} -
+  time taken for request (including response body iteration). PRECISION
+  defaults to 3 (milliseconds) if not specified but may be specified
+  anywhere from 0(seconds) to 6(microseconds). POWER will raise the time to
+  the provided power of 10, useful for converting to micro- or nanoseconds.
+  POWER defaults to 0 if not specified but may be specified any from 0 to 9
 * $time_iso8601 - current local time in ISO 8601 format,
   e.g. "1970-01-01T00:00:00+00:00"
 * $time_local - current local time in Apache log format,