CST DS中AC Simulation Task的选项

CST DS 中  AC Simulation Task 中，有一个’Circuit Simulator’栏，如图所示.这其中的CST,DS APLAC FULL APLAC,这三个怎么选择呀?在help 文件中就是下面简单的说的
The ’Circuit Simulator’ frame offers the selection of the circuit simulator to be used. 都是具体怎么选择?

下次记得说明你的软件的版本，CST DS 2011已经不是这个界面了。
CST DS 2010帮助文件《AC Simulation Task》：
Circuit Simulator frame
CST: Select this option to use CST's circuit simulator for the execution of this task.
DS APLAC: Select this option to use APLAC for CST DESIGN STUDIO for the execution of this task.
Full APLAC: Select this option to use an installed full version of APLAC Simulator for the execution of this task.
The results for this task do not depend on the version selected. A circuit simulator is only used when circuit elements are present in the design.
具体解释请参考上面帮助文件的完整内容。

谢谢你，我用的是09版本的，下次记得了11版还真不一样