+ (KeyCancellation
+ . (
+ (print-function . ,Key_signature_interface::print)
+ (space-alist . (
+ (time-signature . (extra-space . 1.25))
+ (staff-bar . (extra-space . 0.6))
+ (key-signature . (extra-space . 0.5))
+ (right-edge . (extra-space . 0.5))
+ (first-note . (fixed-space . 2.5))
+ ))
+ (Y-offset-callbacks . (,Staff_symbol_referencer::callback))
+ (break-align-symbol . key-cancellation)
+ (break-visibility . ,begin-of-line-invisible)
+ (breakable . #t)
+
+ (meta . ((interfaces . (key-signature-interface font-interface
+ break-aligned-interface item-interface ))))
+ ))