[nblasted]

Alas there appears to be no way to delete. I will be more careful in the future

[dredmorbius]

Generally you've got 2 hours to make edits or delete.

Once a post (or comment) has replies, it cannot be deleted, though it can still be edited.

It's generally frowned on to edit in such a way that original meaning is changed, or responders are made to look bad.