Notes address book question

Is there a way to access the Address book in Notes (or the underlying database) and get a list of groups and the user’s email addresses? Another avenue may be to supply an email address and get back the list of groups it belongs to. I was looking for an api or something so I could call this from another app and have it saved to a database.

I had created a similar process using LDAP only to be told afterwards that the groups do not always match up with Notes. My previous attempt was using PHP fired off by a cron job once a day. Was looking for something similar.

If there are any resources or terminology I should be using when googling for this I’d appreciate at.

Subject: Tools → People → Find User

Here’s a link to the technote describing how this feature works:How Do You Find All References to a Specific Users(s) Using the Domino 6.x Administrator?