math: related-words for until-zero.

diff --git a/core/math/math-docs.factor b/core/math/math-docs.factor
index 43094d35cc5d5f7742efcb8f692b44f3b0b612ad..82f44375fbca19c9f4b9752e486e1b8c411c85ce 100644 (file)
--- a/core/math/math-docs.factor
+++ b/core/math/math-docs.factor
@@ -321,6 +321,8 @@ HELP: until-zero
     }
 } ;
 
+{ if-zero when-zero unless-zero until-zero } related-words
+
 HELP: times
 { $values { "n" integer } { "quot" quotation } }
 { $description "Calls the quotation " { $snippet "n" } " times." }