Set window position - %sp
This format code is used to initialise the position of the window on the screen.
Integer arguments x and y are used to specify the position of the
top left-hand corner of the window in screen co-ordinates.
i=winio@('%si?%spWhy is this stuck in the corner',0L,0L)
If more than one position format is used, the positions are added vectorially.
This is particularly useful in conjunction with the get window position format