slow:The DATA constant exists when the main script contains __END__
slow:The DATA constant does not exist when the main script contains no __END__
slow:The DATA constant does not exist when an included file has a __END__
slow:The DATA constant does not change when an included files also has a __END__
slow:The DATA constant is included in an otherwise empty file
slow:The DATA constant succeeds in locking the file DATA came from
slow:The DATA constant rewinds to the head of the main script
