ADD_INTERFACE (Separation_item,
"Item that computes widths to generate spacing rods. "
- "This is done in concert with @ref{separation-spanner-interface}.",
+ "This is done in concert with @ref{separating-group-spanner-interface}.",
"X-extent "
"conditional-elements "
- "elements"
+ "elements "
"padding "
"skylines "
);