diff --git a/chapter06/file-inst.xml b/chapter06/file-inst.xml
index 767eebe3e..e4a84a276 100644
--- a/chapter06/file-inst.xml
+++ b/chapter06/file-inst.xml
@@ -10,8 +10,27 @@ Install File by running the following commands:
./configure --prefix=/usr
--datadir=/usr/share/misc &&
make &&
- make install &&
- file -C
+ make install
+
+
+
+
+File uses magic numbers to determine a file type. These magic numbers come with
+File in a plain text file. File internally compiles this database each time it
+is run. This is not the normal type of operation for File since compiling a
+plain text file each time is not the fastest way to do it. File offers an
+option "-C" to compile this magic number file. The reason this isn't done
+automagically is that some people like to work on the magic numbers. On the
+other hand many people didn't get it that they should compile the magic
+numbers, so the author of File added a warning when the plain text magic file
+is used. As we usually won't work on the plain text magic file, we
+compile this file, because it's faster, fixes that annoying warning and is how
+it was meant to be:
+
+
+
+
+ file -C