1) CCCX quintupled 2) CCCX x V 3) Centuries ago 4) CLV multiplied by X 5) Mid-16th century date 6) Mid-XVIth century 7) Midcentury year 8) Middle of the 16th century 9) Monumental 1550 10) Roman 1,550 11) The year 1550 12) Year Charles IX was born 13) Year helsinki was founded Found on https://www.crosswordclues.com/clue/mdl
[programming language] MDL (the MIT Design Language) is a descendant of the Lisp programming language. (It is different from the MicroStation Development Language.) Its initial purpose was to provide high level language support for the Dynamic Modeling Group at MIT`s Project MAC. It was initially developed in 1971 on the PDP-10 computer und... Found on http://en.wikipedia.org/wiki/MDL_(programming_language)