Spacing Modifier Letters
The Unicode block Spacing Modifier Letters (U 02 B0- U 02 FF) contains diacritical and other similar characters that mainly have the function to modify the meaning of preceding or following character, but unlike combining diacritical marks above or below another character set be, but as the example, the spacebar a feed (English spacing ) effect. On a typewriter, this would be so keys with own car forward, no dead keys.
The original name "Spacing Modifier Letters" is translated in the German Microsoft programs incorrectly as " letters to the distance determination."