The last section of the Xconfig file is the Mode database (Modes). It contains the VESA timing specifications for various resolutions. The default values work for most graphics cards, but they can be tweaked to center the image and adjust its size on the monitor. Most of the Metro-X servers use this database to configure the card for graphics mode. The numbers indicate which clock to use from the DisplayConfig file's CLOCKS line, and also show the horizontal and vertical timing values. More specifically, an example of the numbers are:
``1024x768'' 65 1024 1092 1220 1344 768 786 791 810
The following table shows the definition of each Modes number from the prior example.
These numbers represent the ranges the electron beam traverses per one vertical
refresh of the screen. They determine where the image is positioned on the
screen, and what the refresh rate is.
