restrict.md in alf-0.10.1

- old
+ new

@@ -5,11 +5,11 @@
 
     #(signature)
 
 DESCRIPTION
 
-This command restricts tuples to those for which PREDICATE evaluates to 
-true.
+This command restricts restricts relations to those tuples for which PREDICATE 
+evaluates to true.
 
 PREDICATE must be a valid tuple expression that returns a truth-value. It 
 may be specified as a ruby code literal, or a mapping between (name, value) 
 pairs. In the latter case, PREDICATE is built as a conjunction of attribute 
 equalities.