Library for Top-k Approximate String Matching, autocomplete and spell checking. Let's imagine you have a website, for instance, a pharmacy website. There could be a lot of dictionaries, such as a list of medical drugs, a list of cities (countries), where you can deliver your goods and so on. Some of these dictionaries could be pretty large, and it might be a tedious for a customer to choose the correct option from the dictionary. Having the possibility of Top-k approximate string search in a dictionary is significant in these cases.