I would like to display the date and time as Centred Text at the top of the plot, and to display the link that starts PonE as a caption (maybe top right). As bonus I've like to take the value following TDEC= and use that to draw a horizontal line
marked as "Target".
The following lines contain the data to be plotted.
Some help in achieving that will be most welcome with explanations I can understand ... I'm still struggling with the manual.