I encountered some issues with the windows terminal regarding the size
and position option.
Specifying "set term windows size x,y position x,y" has no effect once
the graph window is shown. I.e. you can't change the size or position
of an already open window
The width and height specified in the size option should define the
terminal's canvas size. Currently it only takes into account the
graph's status line height, but ignores the window's borders (left,
right, top and bottom) and caption area.
I'd like to propose a patch (see attached file) which should fix both
of these issues and also fix a minor one regarding the correct storage
of the terminal options (for set term save/set term push and show
term) - the terminal's title was not correctly stored, and the
size&position options ignored.