Meta Stack Exchange is where users like you discuss bugs, features, and support issues that affect the software powering all 158 Stack Exchange communities.

What is meta?
Here's how it works:
  1. Any Stack Exchange user can ask a question
  2. The community provides support, votes on ideas, and reports bugs
  3. Your voice helps shape the way Stack Exchange operates

I see "UPD" all over Stack Overflow and other Stack Exchange site and nowhere do I see it defined. Is it short for "update"?

An example:

UPD: problems with UTF-8 encoding in PHP

to be found at Some answers don't allow comments. Why?

share|improve this question
Context is needed. UPD could be a short for update or could be a mistype of UDP. Both of those cases seem relatively common. – ho1 Dec 17 '10 at 21:40
@ho1: Added link to an example. – Richard Cook Dec 17 '10 at 21:41
up vote 4 down vote accepted

That means "update." If you look at the revision history for the question you linked to you can see what was added.

share|improve this answer
Thanks for the explanation. – Richard Cook Dec 17 '10 at 21:45
I've personally never seen that except in the linked question (people normally say Edit:), but that does seem to be what was intended – Michael Mrozek Dec 17 '10 at 21:49
@Michael: I usually write out "Update:" myself, but I think you're right, "Edit:" is probably a lot more common. Without the link in the question, I thought "UPD" was a little ambiguous. – Bill the Lizard Dec 17 '10 at 21:52
I found it all over the "cstheory" SE site and in a few place on meta SO. – Richard Cook Dec 17 '10 at 21:53
@Michael: If you google upd you'll find a few instances where people write upd to mean update on the first pages of results. – ho1 Dec 17 '10 at 22:15

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .