fixes issue with capturing bitmap to buffer zero
(the createBuffer call was preventing creation of buffer with ID 0, as it can’t be used as a place to redirect output)
fixes recently introduced bug with behaviour of VDU 23,27,3 caused by changes to drawBitmap which was compensating for the height of the bitmap when it should only do that for plot calls
fixes issue with capturing bitmap to buffer zero (the
createBuffercall was preventing creation of buffer with ID 0, as it can’t be used as a place to redirect output)fixes recently introduced bug with behaviour of VDU 23,27,3 caused by changes to drawBitmap which was compensating for the height of the bitmap when it should only do that for plot calls