+\ref{sec:structures.root} are declared by the header file
+@|<sod/sod.h>|.\footnote{%
+ This isn't completely true. The @|SodObject| and @|SodClass| structures
+ are defined in a header called @|<sod/sod-base.h>|, which is generated by
+ the Sod translator; but @|<sod/sod.h>| includes @|<sod/sod-base.h>|, so you
+ can forget about this detail.} %