From: Ole Streicher <olebole@debian.org>
Date: Fri, 31 Mar 2017 08:51:58 +0200
Subject: Make CDF optional

---
 src/docs/sun253.xml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/docs/sun253.xml b/src/docs/sun253.xml
index 13c18f7..6e94d53 100644
--- a/src/docs/sun253.xml
+++ b/src/docs/sun253.xml
@@ -15,7 +15,6 @@
   <!-- Include some auto-generated documentation. -->
   <!ENTITY scheme-docs SYSTEM 'scheme-docs.xml'>
   <!ENTITY in-ascii SYSTEM 'in-ascii.xml'>
-  <!ENTITY in-cdf SYSTEM 'in-cdf.xml'>
   <!ENTITY in-colfits SYSTEM 'in-colfits-basic.xml'>
   <!ENTITY in-csv SYSTEM 'in-csv.xml'>
   <!ENTITY in-fits SYSTEM 'in-fits.xml'>
@@ -1255,6 +1254,10 @@ metadata stored as a VOTable byte array in the primary HDU.
 <subsubsubsect id="inCdf">
 <subhead><title>CDF</title></subhead>
 &in-cdf;
+<p><em>In the Debian version, CDF is only supported if the package
+<code>starlink-cdf-java</code> is installed.</em>
+</p>
+
 </subsubsubsect>
 
 <subsubsubsect id="inCsv">