As per the title. When I do
xdotool getactivewindow windowmove 0 0 windowsize 1200 $height_first_monitor
xdotool
moves the window. But when I do
xdotool getactivewindow windowmove -40 0 windowsize 1200 $height_first_monitor
I get a windowmove: unrecognized option '-40'
Google searches for "xdotool move above 0 0" and "xdotool move negative" and similar did not yield any useful results.