Clarify the meaning of a region like "chr2:1,000,000".

diff --git a/samtools.1 b/samtools.1
index dee35abba1fb89c6dae1ec5cb3e5b83ebb92d0fe..77ac869b77e67c793d6d075cd33dba1f3c49680e 100644 (file)
--- a/samtools.1
+++ b/samtools.1
@@ -123,8 +123,9 @@ is specified, all the alignments will be printed; otherwise only
 alignments overlapping the specified regions will be output. An
 alignment may be given multiple times if it is overlapping several
 regions. A region can be presented, for example, in the following
-format: `chr2', `chr2:1000000' or `chr2:1,000,000-2,000,000'. The
-coordinate is 1-based.
+format: `chr2' (the whole chr2), `chr2:1000000' (region starting from
+1,000,000bp) or `chr2:1,000,000-2,000,000' (region between 1,000,000 and
+2,000,000bp including the end points). The coordinate is 1-based.
 
 .B OPTIONS:
 .RS