More PSPP feedback

Hi all

Some improvements I'd like to suggest to psppire - this is all based on the Windows executable.   [See other post - I can't make the Ubuntu version work at all at the moment]

1) The file requester for Import Delimited Text Data is very odd.   It doesn't give the chance to select .csv, .txt or whatever - I think it would be better if it did.

2) In the data editor itself, you can't navigate easily.   For example the following keyboard shortcuts would be very useful:
            PageDn - to go down one "screen full" of data

            Ctrl+Down Arrow to move to the last case

3) When running a simple linear regression, I couldn't see anywhere in the output where it lists the number of observations it has included - I think this should be included somewhere.

4) Does pspp support a Chow test for splitting a population into two groups, running a regression on each and testing for statistically significant differences in the coeffs etc?

Thanks

Rob