411 REFERENCE · Wikibooks
WebObjects/EOF/Modeling/Custom Attributes
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Kieran Kelleher has written an excellent article on his blog about performing encryption on an EO attribute via a custom attribute:
http://web.archive.org/20071121050703/homepage.mac.com/kelleherk/iblog/C729512539/E2033071041/index.html