$ cat dumper.tt
[% USE Dumper Indent = 1;
   GET Dumper.dump(
    file     => "some_file_a.txt",
    headings => [ "term", "definition" ],
  )
%]

$ tpage dumper.tt
$VAR1 = {
  'file' => 'some_file_a.txt',
  'headings' => [
    'term',
    'definition'
  ]
};