S是什么语言？

Question

我在BELL-LABS找到篇论文这样写到：
The S-Net software consists of
database management tools written in C, Perl, Unix commands,
and S, and analysis tools written in S。
这个S是什么啊
谢谢

Answer 1

Network researchers are familiar with the design of Unix, and
why this allows ready extensibility, but S is less widely known.But in many ways, S, which won the ACM Software System
Award for 1999, reflects the Unix programming design. It gives
the analyst the flexibility to tailor analyses to the specific questions
being asked of the data. S contains many functions written
to carry out statistical analysis.
这个是描述