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I can't find any information on this here or in the manual.
I'd like importing to work like this:

Select a cell (say A200).
Go to menu item - File- Import (does not currently exist)
This would open a Windows file chooser window
Select the CSV file.
Go through the existing "open CSV" dialog and make ...

I've just installed Textmaker and Planmaker HD for Android on my new tablet, and the Dropbox/Google Drive integration is wonderful!
(I couldn't get Onedrive to work. I just got a white screen after signing in.)

Please extend this feature to Office for Windows and Office for Linux. (I use both on ...