How to append SAS Variables "efficiently"?

[CharlotteCain]

Hi Matt, I hope you had a good weekend. Sorry, for the late acknowledgement as I couldn't implement your solution until today at office and as I did today I must confess you are the messiah of SAS. Although, with hope I was eagerly anticipating your response, you seem to marvel me with your awesome "thought and application". Well, I guess Stars are born rather than made. What a code!!Great Performance.

Now, the problem is there aint many Matt's in our office so that's a bit of challenge to even maintain such sophisticated code, but I am so inspired and have welcomed the challenge to learn more. Many Many thanks.

Have a great day,

Charlotte from Liverpool, England