math.combinatorics: private docs again. oops

basis/math/combinatorics/combinatorics-docs.factor

@@ -102,6 +102,7 @@ HELP: each-combination
 { $description "Applies the quotation to each combination of " { $snippet "seq" } " choosing " { $snippet "k" } " elements, in order." } ;
 
 
+<PRIVATE
 HELP: factoradic
 { $values { "n" integer } { "factoradic" sequence } }
 { $description "Converts a positive integer " { $snippet "n" } " to factoradic form.  The factoradic of an integer is its representation based on a mixed radix numerical system that corresponds to the values of " { $snippet "n" } " factorial." }
@@ -145,3 +146,4 @@ HELP: selections
         "{ { 1 1 } { 1 2 } { 2 1 } { 2 2 } }"
     }
 } ;
+PRIVATE>