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-rw-r--r--README1
1 files changed, 1 insertions, 0 deletions
diff --git a/README b/README
index e125b6f..74c8185 100644
--- a/README
+++ b/README
@@ -88,6 +88,7 @@ that receives a "<<" method:
 * $pid - process ID of the current process
 * $e{Thread.current} - Thread processing the request
 * $e{Actor.current} - Actor processing the request (Revactor or Rubinius)
+* $env{variable_name} - any Rack environment variable (e.g. rack.url_scheme)
 
 == REQUIREMENTS