X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=README;h=8096b34ede3b81882d0c6b36aa45e69726234e84;hp=3149ec53b074a9f6348c59b8e666631dbd35d138;hb=4eec94579e5ca6f1121ed12ce26945ed23bbea74;hpb=be3b6e0eee631d7611e6e5f96cce246d090b9848

diff --git a/README b/README
index 3149ec5..8096b34 100644
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
 
- * Copyright (C) 1995, Index Data.
+ * Copyright (C) 1995-1996, Index Data.
  * See the file LICENSE for details.
  * Sebastian Hammer, Adam Dickmeiss
 
@@ -33,6 +33,27 @@ client osi:0103/find2.denet.dk:4500
 
 Use '?' to get a list of the available commands.
 
+The current query language is a bit awkward, but functional:
+
+query    ::= ['@attrset' <attribute-set>] rpn
+rpn      ::= complex | simple | attr rpn
+complex  ::= operator rpn rpn
+operator ::= '@and' | '@or' | '@not'.
+simple   ::= term | set.
+term     ::= <word> | '"' <term> ... '"'.
+set      ::= '@set' <setname>.
+attr     ::= '@attr' [<attribute-set>] <number> '=' <number>.
+
+Eg.:
+
+Andersen
+
+"Hans Andersen"
+
+@and @attr 1=1 andersen @attr 1=4 @attr 4=2 duckling
+
+@attrset Bib-1 @and @attr GILS 2=2008 Washington @attr 1=21 weather
+
 The directories:
 
 doc     - Documentation.
@@ -51,7 +72,7 @@ asn     - This module implements the Z39.50/SR protocol. The best way
 	which defines structure and type definitions for each of the
 	types introduced in the protocol specification.
 
-yazlib  - This module implements the transport transparency
+comstack- This module implements the transport transparency
 	stack (COMSTACK). The comstack implements a generic interface
 	for exchanging BER-encoded records over a network. It supports
 	the 'American' mode of exchanging the records straight over