1. Unlike Modula -3 one can also define own character types: 2. Modula was first implemented by Niklaus Wirth himself on a PDP-11.3. Later, Modula -3 had a similar feature. 4. The inventor of Baby Modula -3 worked at Palo Alto, California. 5. Modula , Ada, and ML all developed notable module systems in the 1980s.6. Opaque pointers are present in several programming languages including D and Modula -2. 7. Tartan also produced compilers for the C programming language and Modula -2 programming language. 8. Linguistically, OOT is closer to Eiffel and Modula 3 than to SmallTalk or C + +. 9. Units in Borland's Pascal were similar to Modula -2's separate compilation system. 10. The module design implemented the data abstraction feature of Modula -2 in a very clean way.
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