0 present participle of update
1 to make something more modern or suitable for use now by adding new information or changing its design:
They've updated a lot of the entries in the most recent edition of the encyclopaedia.
One interpretation sees the updating as done by real players who repeatedly play against each other.
It is clearly safe to set the update flag of every lambda-form to u, thereby updating every closure.
The delay in updating the abstract database is a reason for the low number of articles found in the last year searched.