About "programmatically determined link context"

Hello All,
Ability to "identify the purpose of the link without moving focus from the link" is central to the principle of the above term and is expanded upon in the understanding doc.
This is built upon key-combinations to make a screen reader read a sentence / paragraph (or the title of the page / application) ... keys that users employ routinely across applications including word processing or even on a Web page . So these are not obscure key combinations.
This is the minimum  requirement to understand the link 's purpose in context.
Placing a link in a paragraph or sentence is normal construct; requiring one to place aria-labelledby/describedby additionally on contextual content is good for more robust / usability but may be needed in some situations even to pass SC 2.4.4.
Definition: "programmatically determined link context":
http://www.w3.org/TR/WCAG20/#pdlinkcontextdef
Thanks and regards,
Sailesh