Commodore 128 System Manual page 312

SAVE "HELLO", 1, 2
Stores on tape, with name HELLO, and places an END-OF TAPE
marker after the program.
SAVE "",1,3
Stores on tape, with no name, places an EOT marker after the
program, does not allow the program to be relocated on loading.
SCALE
Alter scaling in graphics mode
SCALE n [,xmax,ymax]
where:
n = 1 (on) or 0 (off)
xmax is in the range 320-32767 default 1023 (hi-res) 2047
(multicolor)
ymax is in the range 200-32767 default 1023
Changes the scaling of the bit map display coordinates in both
multicolor and high resolution modes. Coordinates for the
MOVSPR command are also scaled. Maps many logical points to
one physical point.
This is helpful when you need to plot data over a wide range of
values - it will not help if you have a large cluster of data with only
high values.
Because multicolor uses 2 physical pixels on the x-axis per dot,
its normal display is
as opposed to
If you wish to use the same coordinates for multicolor and hi-res
use SCALE 1,640,200 after setting up a multicolor screen and
use the default SCALE values for both types of screen.
NOTE: The GRAPHICS command turns scaling off i.e. is
equivalent to GRAPHIC...: SCALE 0.
17-70
X = 0 to 159 ; Y = 0 to 199
X = 0 to 319 ; Y = 0 to 199