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diff --git a/src/data/ChangeLog b/src/data/ChangeLog
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@@ -1,3 +1,97 @@
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+	Actually implement the new procedure code and adapt all of its
+	clients to match.  Also adapt all of the other case sources and
+	sinks in the tree and their clients to use the
+	casereader/casewriter infrastructure.
+
+	* automake.mk: Add and remove files.
+
+	* any-reader.c: Change into a casereader.
+	* por-file-reader.c: Ditto.
+	* scratch-reader.c: Ditto.
+	* sys-file-reader.c: Ditto.
+
+	* any-writer.c: Change into a casewriter.
+	* por-file-writer.c: Ditto.
+	* scratch-writer.c: Ditto.
+	* sys-file-writer.c: Ditto.
+
+	* procedure.c: Change to use casereader, casewriter, caseinit, and
+	other new infrastructure.
+
+	* scratch-handle.c: Adapt to new infrastructure.
+
+	* case-sink.c: Removed, now dead code.
+	* case-sink.h: Ditto.
+	* case-source.c: Ditto.
+	* case-source.h: Ditto.
+	* casefile-factory.c: Ditto.
+	* casefile-private.h: Ditto.
+	* casefile.c: Ditto.
+	* casefile.h: Ditto.
+	* casefilter.c: Ditto.
+	* casefilter.h: Ditto.
+	* fastfile.c: Ditto.
+	* fastfile.h: Ditto.
+	* fastfile-factory.c: Ditto.
+	* fastfile-factory.h: Ditto.
+	* storage-stream.c: Ditto.
+	* storage-stream.h: Ditto.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+	Add datasheet code.
+
+	* automake.mk: Add new files.
+
+	* datasheet.c: New file.
+
+	* datasheet.h: New file.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+	Until now, the procedure code has provided a case to the
+	case_source, which has filled in the data values that come from
+	the active file.  "Left" data values that don't come from the
+	active file naturally stay the same from case to case, because the
+	procedure code keeps using that same case.
+
+	One of the compromises that comes with the new procedure code is
+	that the active file allocates and provides its own case, which
+	the procedure code then has to resize to provide room for any
+	other variables that should go in the case and then fill in the
+	values of "left" variables.  Then, when we're done with that case,
+	we have to save the values of "left" variables to copy into the
+	next case read from the active file.
+
+	The caseinit code helps with this.
+
+	* automake.mk: Add new files.
+
+	* caseinit.c: New file. 
+
+	* caseinit.h: New file. 
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+	* value.h (value_cnt_from_width): New function.
+
+	* variable.c (var_get_value_cnt): Use new function.
+
+2007-06-06  Ben Pfaff  <blp@gnu.org>
+
+	Add casegrouper, to allow cases read from a given casereader to be
+	broken into groups, each of which has its own casereader.
+	Generally cases are grouped based on having equal values for some
+	set of variables.
+
+	* automake.mk: Add new files.
+
+	* casegrouper.c: New file.
+
+	* casegrouper.h: New file.
+
 2007-06-06  Ben Pfaff  <blp@gnu.org>
 
 	Add interface to lexicographical ordering of cases.