-dash-period. Should be between 0.0 (no line) and 1.0 (continuous
-line).")
- (default-direction ,ly:dir? "Direction determined by note head positions.")
- (digit-names ,vector "Names for string finger digits. ")
- (direction ,ly:dir? "If side-position is 1 (#X), then this property determines if the object is placed #LEFT, #CENTER or #RIGHT with respect to the other object. Otherwise, it determines if the object is placed #UP #CENTER or #DOWN. Numerical values may also be used. #UP=1, #DOWN=-1, #LEFT=-1, #RIGHT=1, CENTER=0 but also other numerical values are permitted.")
+@code{dash-period}. Should be between @code{0.0} (no line) and
+@code{1.0} (continuous line).")
+ (dash-period ,number? "The length of one dash together with
+whitespace. If negative, no line is drawn at all.")
+ (default-direction ,ly:dir? "Direction determined by note head
+positions.")
+ (digit-names ,vector "Names for string finger digits.")
+ (direction ,ly:dir? "If @code{side-axis} is @code{1} (or
+@code{#X}), then this property determines whether the object is placed
+@code{#LEFT}, @code{#CENTER} or @code{#RIGHT} with respect to the
+other object. Otherwise, it determines whether the object is placed
+@code{#UP}, @code{#CENTER} or #DOWN. Numerical values may also be
+used: @code{#UP}=@code{1}, @code{#DOWN}=@code{-1},
+@code{#LEFT}=@code{-1}, @code{#RIGHT}=@code{1}, @code{CENTER}=@code{0}
+but also other numerical values are permitted.")