From b0e5e594e85cbdc75b05cc0f0b665135588f15b3 Mon Sep 17 00:00:00 2001
From: Chase Million <chase.million@gmail.com>
Date: Tue, 21 Jun 2016 10:37:41 -0400
Subject: [PATCH] adding flag 256 per issue #207

---
 docs/UserGuide.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docs/UserGuide.md b/docs/UserGuide.md
index 8e70a2e..08f19d2 100644
--- a/docs/UserGuide.md
+++ b/docs/UserGuide.md
@@ -297,6 +297,8 @@ These flags are automatically set in software based upon conditions that we know
 
 128 - 'bg mask' - annulus events in pixels contiguous to detector edge
 
+256 - 'FUV multimodality' - Includes data from the first three legs of a CAI observation in the FUV, which is strongly correlated to extreme (~15%) outliers in delta-mag vs. mag comparisons against the MCAT. See the gPhoton paper for more information.
+
 ####Calling from within the Python Interpreter
 You can also import and work with _gAperture_ and its modules from within the Python interpeter.