diff --git a/bin/feedgnuplot b/bin/feedgnuplot
index 709564d..7e40a1d 100755
--- a/bin/feedgnuplot
+++ b/bin/feedgnuplot
@@ -1390,6 +1390,7 @@ Simple plotting of piped data:
    2 +-----------------------------------------------------------------+ 0
      1      1.5       2      2.5      3      3.5       4      4.5      5
 
+Here we asked for ASCII plotting, which is useful for documentation.
 
 Simple real-time plotting example: plot how much data is received on the wlan0
 network interface in bytes/second (uses bash, awk and Linux):