So far we have an Emacs text editor with Lisp for writing editor commands, a source level debugger, a yacc-compatible parser generator, a linker, and around 35 utilities.

• 到目前为止我们拥有以Lisp为宏命令的Emacs文本编辑器，源代码级的调试器，与yacc兼容的语法分析器，连接程序和大约35种工具。