diff --git a/docs/dj.1 b/docs/dj.1
index d4c5053..67d294d 100644
--- a/docs/dj.1
+++ b/docs/dj.1
@@ -53,6 +53,9 @@ to a specified byte by index in the input and output of the program
 respectively. This language is inherited from the
 .BR dd (1p)
 utility and is used here to decrease ambiguity.
+
+When seeking or skipping to a byte, writing or reading starts at the byte
+immediately subsequent to the specified byte.
 .\"
 .SH OPTIONS