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diff --git a/CHANGELOG b/CHANGELOG
index 0e1cbb5..b61642e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,44 @@
 Possible compatibility problems with earlier versions marked with '*'.
 
+Shared library support for UNIX using GNU libtool.
+
+* Modified backend interface. Request/Response struct's replaced by
+one read/write C struct. For example bend_fetchrequest and
+bend_fetchresult have been replaced by single bend_fetch_rr struct.
+Every handler - even search has to be registered in bend_init
+handler. This means that the YAZ library no longer refers to
+external functions and it makes it possible to make the whole
+thing a single DLL/SO.
+
+Added Segment handler for backend server.
+
+Added Zmbol/Zebra administrative functions to YAZ client.
+
+Threaded frontend server on UNIX (when POSIX Threads are available).
+Starting the server with option -T enables multi-threading.
+
+--- 1.6 2000/03/03
+
+Added configure option --enable-comp/disable-comp to control use
+of YAZ ASN.1 compiler. Use --disable-comp to use the old *coders
+located in sub directory asn.
+
+YAZ ASN.1 compiler renamed to yaz-comp in sub directory. It's installed
+in ${exec_prefix}/bin along with the other programs yaz-client and
+yaz-ztest.
+
+GNU automake used to maintain makefiles.
+
+Added several OID's.
+
+Changed retrieval module so that we can load records with no abstract
+syntax defined. Tagpaths in these records are fully composed of string
+tags.
+
+Implemented ISO ILL protocol. Refer to stuff in sub directory ill.
+
+--- 1.5 1999/12/10
+
 On UNIX, the generated makefile now supports a proper 'make install'.
 The prefix can be set via GNU configure to set the install location
 (default is /usr/local).
@@ -24,7 +63,8 @@ details.
 
 Changed name of logging function, logf, to yaz_log, to prevent name
 clash with some math-log functions. The YAZ header log.h defines logf
-to yaz_log so there should be no incompatibilities by this modification.
+to yaz_log (#define) so there should be no incompatibilities by this
+modification.
 
 Added bend_start/bend_stop handlers for server. These handler are
 called on start/stop of server. For windows they are called whenever
@@ -37,8 +77,10 @@ cases, incompatible with the old decoders. There are differences in the
 following C structures Z_DiagRec, Z_External, Z_SortRequest, Z_SortResponse,
 Z_AttributesPlusTerm, Z_ProximityOperator, Z_DefaultDiagFormat.
 The preprocessor variable ASN_COMPILED is defined when the compiled
-ASN.1 is being used. Stuff related to the auto-generated encoders
-are located in sub directory <tt>z39.50</tt>.
+ASN.1 is being used. Encoder/decoder routines as well as the Z39.50
+protocol ASN.1 is located sub directory <tt>z39.50</tt>. If you
+wish to use the old encoders/decoders you can specify --disable-yc
+for configure.
 
 Assigned OID for old DB Update (VAL_DBUPDATE0). Updated YAZ compiled
 version so that it supports both new - and old version of DB Update