Dear Readers:

This number contains only two papers. So: there is room for you in further editions, hurry up and submit some good stuff!

However, both papers in this issue are very special: both are co-authored by two of the most prominent persons who both worked at some time in Formal Language Theory and now are also leaving a deep impression in other more applied areas.

Karel Culik II, who became famous by solving the DOL equivalence problem; and the grand old man of formal language theory, Seymour Ginsburg, who influenced a generation of computer scientists.

By the way, if you want to read more about them, why don't you get hold of the very nice book People and Ideas in Theoretical Computer Science, C.Calude (Ed.), Springer Pub. Co., 1998, ISBN 981-4021-13-X ... and have a look e.g. at the paper "Not only theory"?

All the best,