REQ_91.2.3: If the cmi.interactions.n.type is fill-in, then the characterstring shall representan array of localized_string_type

If the cmi.interactions.n.type is fill-in, then the characterstring shall representan array of localized_string_types, where each element of the array is separated bya special reserved token [,]. The LMS shall support characterstrings that include atleast 10 (the required SPM) localized_string_types. The characterstring shall berepresented in the following format:• localized_string_type[,]localized_string_typeThe following requirements shall be adhered to when building the characterstring: