I worked on a billing system that was written in APL, maybe 60 functions at 5-10 lines each. The corresponding manuals (one development, one user guide) were b

I worked on a billing system that was written in APL, maybe 60 functions at 5-10 lines each. The corresponding manuals (one development, one user guide) were both over 300 pages. Maybe some of the APL mavens can do the existing examples in APL and explain them. The write density of APL is pretty amazing. Depending on what you are doing a clear winner at code golf.