This reminds me of my first job (in ECAD/EDA) where microemacs was part of the design process. We had microemacs "programs" (like macros) which post-processed the output from other CAD tools. Microemacs had an internal C-like (interpreted) language, and combined with the fact that it ran on DOS and Windows 3.1 made it sort of suitable for this. However I really hope those have been replaced now.
