(backend ps "which backend to use by default; Options: eps, ps [default], scm, svg, tex, texstr)")
(check-internal-types #f "check every property assignment for types")
(clip-systems #f "Generate cut-out snippets of a score")
+ (datadir #f "LilyPond prefix for data files (Readonly).")
(debug-gc #f "dump memory debugging statistics")
(debug-gc-assert-parsed-dead #f "for memory debugging:
ensure that all refs to parsed objects are dead. This is an internal option, and is switched on automatically for -ddebug-gc.")