Edited answer does not show “edited” or history link? [duplicate]

Question

Possible Duplicates:
How does editing work?
Is there an editing ‘grace period’ on answers after they have been posted?

This answer on SO was edited by the original author but it doesn't show an edited timestamp or link to answer history.

In C# how can I serialize a List<int> to a byte[] in order to store it in a DB field?

Are there times when edits are not shown as edits? What are the rules for this? Or am I misreading somehow?

I know it was edited 'cause I read the original and new, and the comments refer to edits.

Answer 1

In the first 5 minutes the edits are not shown in the history. You have time to clean up typos.