用于创建的模型- sfmodel和sfsystem供应的初始值—。用于（1）强调利用电子（样品）的ML估计在expte。（2）如果是测试工作（3）给边缘（后缀），这样用户可以选择创建，比如，z1_mypostfix。(To be used to supply initial values for models created by -sfmodel- and -sfsystem-.
To do:
(1) emphasize the use of e(sample) in ExpTE following the ml estimation.
(2) Test if ctype* work
(3) Give marginal(postfix), so that users can choose to create, say, z1_mypostfix.)