The stringMatch method is used for literal string comparison. This compares the value set by authors the learners response and checks whether they are the same or not. For instance, it would mark x+1 and 1+x differently.
StringMatch is similar to EquivLiteral, but is a more basic comparison method as it does not take the syntax (form) or data type into account.
Additional Options
Ignore leading and trailing spaces
Ignores spaces before and after a value, i.e. " a " will be treated as "a".
Treat multiple spaces as one
Multiple spaces will be ignored and treated as one, i.e "a b" is the same as "a b".