The CEO of Forrester sent an email to lots of people about changing from bowties to diamonds and assumed somehow that people know what you are talking about when you say <> or >< with regards to working with customers.

;)

Excerpt:
"Using Jack Welch’s model of servicing the companies you build products for (the diamond: <>) versus merely making the products (the bow tie: ><) revolutionized the buyer/seller relationship in big industry."

Read Bowties to diamonds if you are interested. I didn't bother to try.