One sentence about the result that another person can answer with yes or no without asking for clarification.
A done criterion describes a state of the result, not an activity, and it is binary: there is no “almost”. It says how it is checked, who checks besides you and by when. Whether it holds up shows in a trial with another person: for each criterion they say yes, no or ask a question, and every question shows what is still missing from the assignment. The template for it is called Definition of Done.
Example from Module 3
Planning office [example]: Instead of “The report is clear.” it says “The report has the four sections Hours, Dates, Behind schedule, Open.” The first the office manager would have to ask about, the second she can tick off.
Module 3: “An assignment someone else can check off”. In the Werkbank course room, with sign-in.