8.1.10 Other text markup issues

To use a normal font within a title, you must define it manually

#(def-markup-command (normal-font layout props arg) (markup?)
  "Switch to normal text font"
  (interpret-markup layout (cons '((font-series . 'medium) (font-shape . 'upright)) props) arg))

\header{
  title = \markup{ ABCD \normal-font ABCD }
}

Other languages: English.
Using automatic language selection.