In order to attain the goal, the author edits a program which mainly adds some extended programs to the original executive file and coordinates the relations between them.

• 作者把实现过程汇编成一个可执行文件，该文件主要功能是在用户输入的待扩展可执行文件的尾部添加扩展程序，并协调好控制权的移交。