这些命令都是要写道注释块里面的
并且'\'符号和'@'符号是可以互换的
\class to document a class structure
\struct to document a C-struct
\union to document an enumeration type
\enum to document an enumeration type
\fn to document a function
\var to document a variable or typedef or enum value
\def to document a #define
\typedef to document a type definition
\file to document a file
\namespace to document a namespace
\package to document a java package
\interface to document an IDL interface\
整个的命令有上百条……这个还需要慢慢学习查询