If you selected a raster image, the current resolution of this
image will be adopted. At the same time the type of picture (RGB, b&w
etc.) will be set correctly in the function panel. If the
page switch is set, or another type of frame is selected, a click
on this icon sets the current screen magnification resolution as the
output resolution. Thus a picture will be converted exactly as you see
it on the screen at the time.