-@code{0.0} means keep the default position (centered on the note
-head), @code{1.0} means centered on the stem. Interpolated values are
-possible.")
+@code{0.0} means centered on the note head (the default position of
+most scripts); @code{1.0} means centered on the stem. Interpolated
+values are possible.")
+ (toward-stem-shift-in-column ,number? "Amount by which a script
+is shifted toward the stem if its direction coincides with the stem
+direction and it is associated with a @code{ScriptColumn} object.
+@code{0.0} means centered on the note head (the default position of
+most scripts); @code{1.0} means centered on the stem. Interpolated
+values are possible.")