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WARNING: This is Outdated Documentation!!!!

THIS IS OUTDATED DOCUMENTATION See new Umlaut documentation at

Umlaut is OpenURL link resolving middleware that adds functions and services to commercial link resolving software such as SFX.

More information

About Umlaut - A gentle introduction to what Umlaut is and what it can do for you.

Digital Text Features - A tour of some of the 'advanced' digital text features, with a demos pointing to JHU site, hosted on jrochkind's blog.

Umlaut Listserv

Rubyforge home page for developers

Umlaut wishlist

Live installation at JHU, base url is

Installation and Configuration

Umlaut Installation

Umlaut Setup




Umlaut API Documentation

Umlaut Technical Overview


Umlaut Local Configuration Architecture

Specific Topics

Umlaut URL parameters

Umlaut logging

Umlaut SFX statistics gotchas


Umlaut full API

Umlaut partial html API

JQuery HTML Updater

Developer Notes

Notes for a User/Auth architecture