Filemask example please

Can someone show me how to use filemask with get to download all *.txt and all *.doc files after I am connected. Even if they are in sub directories? Please and thank you.

See
https://winscp.net/eng/docs/scriptcommand_get
https://winscp.net/eng/docs/file_mask

So the get command or filemask cannot include designated file types within subfolders that vary in name from time to time.
Don't see any of that in docs :-(

Sorry, I do not understand.