See next subsection for incompatibilities. EusLisp's compiler can boost the execution 5 to 30 times as fast as the interpreted execution. The compiler keeps the same semantics as the interpreter. Fibonacci buddy method, which is memory efficient, GC efficient, and robust, is used for the memory management. EusLisp can run on machines with relatively modest amount of memory.
Users are free from the optimization of page allocation for each type of data.
Since numbers are always represented as immediate data, no garbage is generated by numeric computation. Solid models can be defined from primitive bodies using CSG set operations. Mass properties, interference checking, contact detection, and so on, are available. Postscript output compatible with idraw and PICT format graphics description for Macintosh can be generated. Edge based image processing facility is provided.