X-Git-Url: https://git.distorted.org.uk/~mdw/sod/blobdiff_plain/a13386ba3e5cbeecd0e4315a423e3280dabf0f1c..0a8f78ec333b8193d1155b5839aea67bb62cf480:/doc/misc.tex

diff --git a/doc/misc.tex b/doc/misc.tex
index ac89b6c..859ec51 100644
--- a/doc/misc.tex
+++ b/doc/misc.tex
@@ -505,6 +505,15 @@ be implemented fairly easily using @|merge-lists| below.
   the partial order.
 \end{describe}
 
+\begin{describe}{fun}{cross-product \&rest @<pieces>}
+  Return the cross product of the @<pieces>.
+
+  Each arguments may be a list, or a (non-nil) atom, which is equivalent to a
+  singleton list containing just that atom.  Return a list of all possible
+  lists which can be constructed by taking one item from each argument list
+  in turn, in an arbitrary order.
+\end{describe}
+
 \begin{describe}{fun}
     {find-duplicates @<report> @<sequence> \&key :key :test}
   Call @<report> on each pair of duplicate items in a @<sequence>.