X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=README;h=42da23a57570b8bfaeec1185b3f91d16b18c7521;hp=5079588fd2d72b5f2185417e3ecdc2bc27e6c3ba;hb=88941d4a9e272daca9323cd19bf4829b6d32871b;hpb=fc89703038b1168a8f52b6920c50dedb9080063d

diff --git a/README b/README
index 5079588..42da23a 100644
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
 
- * Copyright (C) 1995, Index Data.
+ * Copyright (C) 1995-1997, Index Data.
  * See the file LICENSE for details.
  * Sebastian Hammer, Adam Dickmeiss
 
@@ -35,14 +35,21 @@ 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>.
+query     ::= ['@attrset' <attribute-set>] rpn
+rpn       ::= complex | simple | attr rpn
+complex   ::= operator rpn rpn
+operator  ::= '@and' | '@or' | '@not' | '@prox' proximity
+simple    ::= term | set.
+term      ::= <word> | '"' <term> ... '"'.
+set       ::= '@set' <setname>.
+attr      ::= '@attr' [<attribute-set>] <number> '=' <number>.
+proximity ::= exclusion distance ordered relation which unit
+exclusion ::= '1' | '0' | 'void'
+distance  ::= <number>
+ordered   ::= '1' | '0'
+relation  ::= <number>
+which     ::= 'known' | 'private'
+unit      ::= <number>
 
 Eg.: