doc: fix description of lexicograhpic order relations

diff --git a/doc/user.pod b/doc/user.pod
index b515bbf..30be3a0 100644 (file)
--- a/doc/user.pod
+++ b/doc/user.pod
@@ -531,10 +531,11 @@ and return an identity relation between two such sets.
                __isl_take isl_dim *set_dim);
 
 These functions take a dimension specification for a B<set>
-and return maps that map elements of a set of the given dimension
-to elements that are lexicograhically less
+and return relations that express that the elements in the domain
+are lexicograhically less
 (C<isl_map_lex_lt>), less or equal (C<isl_map_lex_le>),
-greater (C<isl_map_lex_gt>) or greater or equal (C<isl_map_lex_ge>).
+greater (C<isl_map_lex_gt>) or greater or equal (C<isl_map_lex_ge>)
+than the elements in the range.
 
 =back