diff --git a/doc/sdcv.1 b/doc/sdcv.1
index 6e2627d..287613b 100644
--- a/doc/sdcv.1
+++ b/doc/sdcv.1
@@ -66,7 +66,11 @@ $(HOME)/.sdcv_history
 
 This file include last  $(SDCV_HISTSIZE) words, which you seek with sdcv. 
 SDCV use this file only if it was compiled with readline library support.
+.TP
+$(HOME)/.sdcv_ordering
 
+This is a text file containing one dictionary bookname per line.
+It specify in which order results of search should be shown.
 .SH ENVIRONMENT 
 Environment Variables Used By \fIsdcv\fR:
 .TP 20