+@c Possibly deprecated; under discussion.
+@c usage: @lsr{ancient,Ancient-notation,custodes.ly}
+@macro lsr{SECTION,DIR,TEXT}
+@ifhtml
+@uref{source/input/lsr/snippets/\DIR\.html#\TEXT\,@file{\SECTION\/\TEXT\}}
+@end ifhtml
+@ifnothtml
+@file{\SECTION\/\TEXT\}
+@end ifnothtml
+@end macro
+