- (span-type ,string? "What kind of spanner should be created? E.g. ligature
-for ligatures, or text or hairpin for (de-)crescendi.
-
-TODO: Consider making type into symbol.")
- (span-text ,string? "The displayed text for text spanners (e.g. cresc.)")
+ (span-type ,symbol? "What kind of dynamic spanner should be created?
+Options are @code{'text} and @code{'hairpin}.")
+ (span-text ,markup? "The displayed text for dynamic text spanners
+(e.g., cresc.)")