The firstly, its plan is an important component for the
entire system on methods; it is the basic steps and
procedures it should obey; and it is the important guarantee
for success of entire activities. It is not static, but can be
adjusted according to the specific items. Generally speaking,
according to the one suggested by Association of Engineers
on value in the United States, its basic steps and procedures
should be in the following steps: preparation, collection of
information; functional analysis; creation of the program;
evaluation of the program; development of the program, and
its implementation.