A flourish of approval (goedkeuringskrul) or curl (krul) is a Dutch symbol, analogous to a check mark. It indicates approval, and is mostly used to grade schoolwork.
The krul first appeared in the early 19th century together with the rising bureaucracy in the Netherlands.
The symbol is rarely used outside of the Netherlands
Despite its wide usage throughout the country and its former colonies, there is no Unicode symbol for it. Similar to a dele, it may be substituted with the German penny symbol, â°.