3 texidoc
= "The whiteout command underlays a white box under a
4 markup. The whitening effect only is only guaranteed for staff lines,
5 since staff lines are in a lower layer than most other grobs. "
16 \override TextScript
#'extra-offset
= #'(2 . 4)
17 c4-
\markup { \whiteout \pad-markup
#0.5 foo
} c