Possible compatibility problems with earlier versions marked with '*'.
---- 1.0pl1 1995/12/5
+--- 1.0pl4 1996/1/24
-Bug in Explain DatabaseInfo module fixed.
+Added Sort PDU.
+
+Fixed small problem in SUTRS-filter. A newline was sometimes inserted before
+the rank and record number.
+
+Adjustments to the frontend server.
+
+Fixed diagnostic BER dumper. It ignored the file argument.
+
+--- 1.0pl3 1996/1/2
+
+Various changes to retrieval module.
+
+Changed the union discriminators of the protocol files from enums to
+ints paired with #defines.
+
+*Changed oident.class to oident.oclass to avoid a reserved word in C++
+ compilers.
-Some '\r' snuck into one or two of the config tables. Curse on Windows.
+*Changed operator in the RPN structure to 'roperator', again to avoid a
+ conflict with C++.
+
+Fixed problems in Explain decoders/encoders.
+
+--- 1.0pl2 1995/12/6
+
+Memory bug in log module fixed.
+
+--- 1.0pl1 1995/12/5
Occasional malloc() of 0 bytes fixed in d1_espec.c.
+Bug in Explain DatabaseInfo module fixed.
+
+Some '\r' snuck into one or two of the ret'l config tables. A curse on Windows.
+
--- 1.0 1995/11/28
The shift to v1.0 signals that we now consider the *core* functionality