请问Capture里面Project和Design的区别

Note A project cannot have more than one design (.DSN) file. If you try to add a second .DSN file to your project, the Overwrite dialog box appears, asking if you want to replace the existing design.

User’s Guide 里面有上面的话，就是一个project里面只能有一个design，那project和design的区别是什么?

thx

我也想知道