Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Input: A Digital Object Identifier ( or DOI ) is a permanent way to identify an online document .
Output:
In computing , a digital object identifier ( DOI ) is a persistent identifier or handle used to identify objects uniquely , standardized by the International Organization for Standardization ( ISO ) .