field_formatters

Define field formatters that can only be used on text
fields. These field formatters allow the site builder to choose
from one of several ways to manipulate the text field’s values before
outputting the text on the page.

FEATURES:
———

1. Rot13 – The text field value should be printed with the ROT13 encoding
( https://en.wikipedia.org/wiki/ROT13 ). For example, “Lorem Ipsum” would become “Yberz
Vcfhz”.


Source: https://drupal.org/project/project_module/feed/all