KGram typedef
KGram = String
An alias for String, used in the context of a sequence of k characters from a Term.
A k-gram can start with "$", dentoting the start of the Term, and end with "$", denoting the end of the Term.
The 3-grams for "castle" are { $ca, cas, ast, stl, tle, le$ }
Implementation
typedef KGram = String;