Basic scatterplot in SPSS

Hi everyone,
I have a general question. I'd be very appreciative for assistance/advice.

I have a scatterplot and there a concentrated region of datapoints in the middle of this plot. I am quite interested in the datapoints in such a region.
I was wondering how I can somehow highlight such points and export/copy their corresponding values to a txt file?
(I've been experimenting with the 'lasso' tool, but it hasn't taken me very far. I'm using SPSS.)

I'd be highly appreciative for assistance, and thanks in advance,