【例1.10.1-1】在指令窗中运行help 的示例。

（1）

help help  

 HELP On-line help, display text at command line.

    HELP, by itself, lists all primary help topics.  Each primary topic

    corresponds to a directory name on the MATLABPATH.

 ......     ......      ......        

（2）

help  

HELP topics:

matlab\general       -  General purpose commands.

matlab\ops           -  Operators and special characters.

matlab\lang          -  Programming language constructs.