不受限制，只要我知道了。

Not as far as I know.

我知道最近是

> out.txt (
    @echo.bla
    @echo.bla
    ...
)

（ @ prevents命令shell本身从印刷它的运行的命令，而回声。允许你开始与一个空间中的线。）

(@ prevents the command shell itself from printing the commands it's running, and echo. allows you to start a line with a space.)