On Mon, 10 May 2021, Theodoros Panagiotidis wrote:
 Dear Allin,
 Thanks for this.
 Please find attached the screenshot of the graph and the versions of gretl
 and gnuplot.
 It is not working. 
Thanks. I see what you mean! Could I ask you to post an image of a 
relatively simple plot that's easy to replicate? For example, use 
Ramanathan dataset data9-7 and make a time-series plot of PRIME and 
UNEMP "on a single graph". For reference I'm attaching a screenshot 
of what I mean.
Allin