The default mapping mode is MM_TEXT. In this mapping mode, one logical unit is mapped to one pixel on the device or display.
A simple Windows application created three rectangles as they appear in the logical and physical coordinate spaces when MM_TEXT is the mapping mode, as shown in Figure 2.5. The drawing on the left illustrates the logical space; the drawing on the right illustrates the device, or physical, space. The rectangles appear vertically elongated in the physical space because pixels on the chosen display are longer than they are wide. The rectangles appear to be upside-down because positive y extends downward in the physical-coordinate system.