1，report_msg:prints a user-defined string expression to the test run report
　　2，pause:The pause function stops the test run and displays a string expression in a message box on the screen
　　report_Msg和pause是在Win下显示的信息，在UNIX下是printf
　　3，radio_button:控制按扭属性是ON还是OFF，如：
　　set_window("Flight Reservation"，3);
　　button_set("{class:radio_button，MSW_class:Button，label:Business}"，ON);
　　4，return[expression]：返回值
　　5，脚本格式：
　　Test Header:
　　--------->Test Name
　　--------->Subject
　　--------->Test Creator
　　--------->Date of creation/Date of revision
　　--------->Purpose of the test
　　正式脚本
　　6，static const<CONST_NAME>=<const_value>;放在脚本前面
　　7，[static/public]<variable_name>=[<variable_value>];静态和公共变量
　　8，三种判断方式
　　------->if(win_exists("Window_Name")==0){
　　set_window("Window_Name");
　　-------->if(!win_exists("Window_Name")){
　　set_window("Window_Name");
　　--------->if(win_exists("Window_Name")==E_OK){
　　set_window("Window_Name");
　　9，自己创建错误提示代码的协定
　　-------->Error codes should be in capital letters.必须为大写字母
　　-------->Error codes should begin with the letter“E”followed by an underscore(for example，E_MY_ERROR).
　　-------->Error code numbers should include a dash“-”followed by a five digit value(for example，-31001).
　　-------->Error codes should be defined as public in a library or initialization test or example，public const E_MY_ERROR=-31001).
　　10，GUI_Load和GUI_Unload
　　GUI_Load(file_name):加载GUI的MAP文件，加载的是全路径
　　GUI_unload():释放GUI文件
　　如：
　　#This loads the GUI file
　　GUI_load("E:\file1.gui");
　　GUI_list_map_buffers(out_file，out_buffer);
　　#The out_file contain the loaded gui file file1.gui.
　　GUI_unload(file1.gui);
　　#This unloads the GUI file
　　GUI_list_map_buffers(out_file，out_buffer);
　　#Now the out_file array does not contain file1.
　　11，tl_step:可以输出一些测试的信息
　　12，Function Header
　　The function header is placed above a user defined function.Like the Test
　　Header，the function header is enclosed by the"#"symbol and stores
　　information about the function:
　　>Function Name
　　>Descrīption or purpose of the function
　　>Input parameters
　　>Output parameters
　　>Return Values
　　For example:
　　################################################################
　　#FUNCTION:get_flight_from_table
　　#PURPOSE:This function is static only to this file.It selects a flight from the
　　#flight table using a given flight number.Also uses split()function to aclearcase/"target="_blank">ccess the
　　#flight number from the table.
　　#
　　#INPUT PARAMS:flight_num The flight number to be selected.
　　#OUTPUT PARAMS:none
　　#RETURN VALUES:Standard return values.
　　###############################################################
　　static function get_flight_from_table(in flight_num){...
　　13，TSL includes four types of functions:
　　>Context Sensitive functions perform specific tasks on GUI objects，such as
　　clicking a button or selecting an item from a list.Function names，such as
　　button_press and list_select_item，reflect the function’s purpose.
　　>Analog functions depict mouse clicks，keyboard input，and the exact
　　coordinates traveled by the mouse.
　　>tandard functions perform general purpose programming tasks，such as
　　sending messages to a report or performing calculations.
　　>Customization functions allow you to adapt WinRunner to your testing
　　environment.