From b485c95ee05259493ccbb7d1c83e24057bf73d2b Mon Sep 17 00:00:00 2001
From: Gustavo Neves <guneves@gmail.com>
Date: Mon, 15 May 2017 10:18:42 -0300
Subject: [PATCH] update readme

---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index cfdf62f..19597b0 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,9 @@ pdfScale.sh v2.0.3 - Paper Sizes
      Inches |     11.7 x 8.3
 ```
 #### Scale by 0.95 (-5%)
+This also shows a very special case of PDF file that has no `/MediaBox` defined,  
+because it is a dumb container of n-up printed binary PDF pages.  
+So, `grep` fails on this one.
 ```
 $ pdfscale -v ../input-nup.pdf
 pdfscale v2.0.2 - Verbose Execution