OpenOffice - Importing from text files

To opens a dialog for import setup, there are at least two options:

1. Simple Copy/Paste

Copy the text using Ctrl+C and paste it using Ctrl+V.

or

2. Using a file having a .csv extension.

Rename the original file (or copy it), adding a .csv  extension.
For instance, if you have a file using .diff extension (myfile.diff), without the .cvs suffix, OpenOffice doesn't recognize it as an import, and it doesn't open the import dialog.
This is the trick and certainly there are other extensions that may be used instead .cvs. Test it, renaming the file with another extension and repeating the procedure. If the dialog is opened, that extension is another alternative.

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