I wrote, in response to Sven on apparently interminable printing:
I just created an artificial dataset with 250 observations on
550 variables, opened it, and issued the "print" command in the
console. Yes, it took about 40 seconds of 100% CPU, but then I
got the printout OK.
This is mostly a GUI performance issue. The same thing in
gretlcli executes in just a second or two.
Aha, I've found the performance bottleneck on this point.
I had thought it was GTK, but in fact it was a gross inefficiency
in gretl's handling of printing to an in-memory buffer. Printing
of large chunks of data in the GUI should now be very much faster.
(It's more or less instantaneous for the 250 x 550 dataset.)