MPFT :: __toString()
A default implementation of PHP’s magic method __toString to allow the MEOW_Field to auto-convert itself to a string when echoed. This facility allows for very readable code in your templates.
Note: many field types will overload this method to allow different types to output more appropriate HTML code. For example, the image type will output an image tag (which is more useful than the URL which is stored), and the Visual Editor type will run the WordPress content filters over the content of the field.
This method is not intended to be called directly.