Lay translation. Links that you see in web pages are called URL links. In your web browser, the web page address is a URL.
A URI is the same thing, for your purposes. (The change from URL to URI just means that it can link to things other than internet web pages.)
Folks can now share links that open up things in Accordance. The link will begin with accord: instead of http: that you're used to seeing in your web browser.
So, you can now have a web page (or a PDF or a word document or an email, etc) that has a specially formatted link in it that when you click on the link, instead of opening a web page (such as opening a bible text on biblegateway), it will open the link in Accordance.
For instance, this link will open your default text and lookup a verse in John:accord://read?John_11:35
You can see the help file here:file:///Applications/Accordance.app/Contents/Resources/Accordance%20Help/Default.htm#topics/05_dd/using_links_common_tasks.htm
Note that for security reasons, non-web page links in a web forum like this are nullified, so you'll have to copy and paste into your web browser address bar to see it in action.
Edited by Joe Weaks, 03 July 2014 - 12:46 PM.