See various .pm files. Math::String::Charset::Nested: * ! finish bigram support Math::String::Charset::Grouped: * finish * {_end} is a simple set, but sometimes used like a hash, this must be wrong! Math::String::Charset: * binary search in bstr() to find out base number? Please send me test-reports, your experiences with this and your ideas - I love to hear about my work! Tels