diff --git a/basis/sorting/human/human-docs.factor b/basis/sorting/human/human-docs.factor
new file mode 100644
index 0000000000..5342b28317
--- /dev/null
+++ b/basis/sorting/human/human-docs.factor
@@ -0,0 +1,71 @@
+! Copyright (C) 2009 Doug Coleman.
+! See http://factorcode.org/license.txt for BSD license.
+USING: help.markup help.syntax kernel math.order quotations
+sequences strings ;
+IN: sorting.human
+
+HELP: find-numbers
+{ $values
+     { "string" string }
+     { "seq" sequence }
+}
+{ $description "Splits a string on numbers and returns a sequence of sequences and integers." } ;
+
+HELP: human-<=>
+{ $values
+     { "obj1" object } { "obj2" object }
+     { "<=>" "an ordering specifier" }
+}
+{ $description "Compares two objects after converting numbers in the string into integers." } ;
+
+HELP: human->=<
+{ $values
+     { "obj1" object } { "obj2" object }
+     { ">=<" "an ordering specifier" }
+}
+{ $description "Compares two objects using the " { $link human-<=> } " word and inverts the result." } ;
+
+HELP: human-compare
+{ $values
+     { "obj1" object } { "obj2" object } { "quot" quotation }
+     { "<=>" "an ordering specifier" }
+}
+{ $description "Compares the results of applying the quotation to both objects via <=>." } ;
+
+HELP: human-sort
+{ $values
+     { "seq" sequence }
+     { "seq'" sequence }
+}
+{ $description "Sorts a sequence of objects by comparing the magnitude of any integers in the input string using the <=> word." } ;
+
+HELP: human-sort-keys
+{ $values
+     { "seq" "an alist" }
+     { "sortedseq" "a new sorted sequence" }
+}
+{ $description "Sorts the elements comparing first elements of pairs using the " { $link human-<=> } " word." } ;
+
+HELP: human-sort-values
+{ $values
+     { "seq" "an alist" }
+     { "sortedseq" "a new sorted sequence" }
+}
+{ $description "Sorts the elements comparing second elements of pairs using the " { $link human-<=> } " word." } ;
+
+{ <=> >=< human-compare human-sort human-sort-keys human-sort-values } related-words
+
+ARTICLE: "sorting.human" "sorting.human"
+"The " { $vocab-link "sorting.human" } " vocabulary sorts by numbers as a human would -- by comparing their magnitudes -- rather than in a lexicographic way. For example, sorting a1, a10, a03, a2 with human sort returns a1, a2, a03, a10, while sorting with natural sort returns a03, a1, a10, a2." $nl
+"Comparing two objects:"
+{ $subsection human-<=> }
+{ $subsection human->=< }
+{ $subsection human-compare }
+"Sort a sequence:"
+{ $subsection human-sort }
+{ $subsection human-sort-keys }
+{ $subsection human-sort-values }
+"Splitting a string into substrings and integers:"
+{ $subsection find-numbers } ;
+
+ABOUT: "sorting.human"
diff --git a/basis/sorting/human/human.factor b/basis/sorting/human/human.factor
index f338e21887..2c4d391a60 100644
--- a/basis/sorting/human/human.factor
+++ b/basis/sorting/human/human.factor
@@ -9,6 +9,8 @@ IN: sorting.human
 
 : human-<=> ( obj1 obj2 -- <=> ) [ find-numbers ] bi@ <=> ;
 
+: human->=< ( obj1 obj2 -- >=< ) human-<=> invert-comparison ; inline
+
 : human-compare ( obj1 obj2 quot -- <=> ) bi@ human-<=> ;
 
 : human-sort ( seq -- seq' ) [ human-<=> ] sort ;