在基于文档的Cocoa应用程序中实现导出功能的可接受方式是什么？

I have a simple document-based Cocoa app that acts as a viewer for .wav files, to do a bit of frequency analysis. I'd like to be able to export the data gleaned from opened files to CSVs for further analysis in other programs.I have a simple document-based Cocoa app that a