document spark option

[barcat.git] / barcat

diff --git a/barcat b/barcat
index 1b7cd219353c6f20e29da615c55bd3afd74888c6..a7c67ee11cb88a543c502da66036f4f7d1bf823f 100755 (executable)
--- a/barcat
+++ b/barcat
@@ -356,6 +356,11 @@ or 68% of all entries.
 
 =back
 
+=item --spark
+
+Replace lines by I<sparklines>,
+single characters corresponding to input values.
+
 =item -s, --stat
 
 Total statistics after all data.