In response to a question (that may include a image) the respondent types a word or short phrase.
There may be several possible correct answers, each with a different grade. If the "Case sensitive" option is selected, then you can have different scores for "Word" or "word".
You can use the asterisk character (*) as a wildcard to match any series of characters. For example, use ran*ing to match any word or phrase starting with "ran" and ending with "ing". If you really do want to match an asterisk then use a backslash like this: \*
Without wildcards the answers are compared exactly, so be careful with your spelling!