+You can also force the use of a specific prototype. In this case, C<$name> must be a hash reference that holds exactly one key/value pair, the key being the function name and the value the prototpye that should be used to call it.
+
+ recall { 'CORE::push' => '\@$' }, $a, 1, 2, 3; # will only push 1
+
+This allows you to recall into C<CORE::grep> and C<CORE::map> by using the C<\&@> prototype :
+
+ sub mygrep (&@) { recall { 'CORE::grep' => '\&@' }, @_ } # the prototypes are intentionally different
+