This is Perl module PerlX::MethodCallWithBlock. INSTALLATION PerlX::MethodCallWithBlock installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan PerlX::MethodCallWithBlock Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test Then install it: % make install DOCUMENTATION PerlX::MethodCallWithBlock documentation is available as in POD. So you can do: % perldoc PerlX::MethodCallWithBlock to read the documentation online with your favorite pager. Kang-min Liu