Mercedes-Benz A-Class Operator's Manual page 259

Entering characters on the touchscreen
Requirements:
1 Input line
2 Displays suggestions during entry
3 Deletes the entry
4 Deletes
An online connection is required for some
R
functions.
Pressing or pressing briefly deletes the last
character entered
Pressing and holding deletes the entry
5 Accepts an entry
MBUX (Mercedes-Benz User Experience) 257
Using the keyboard
6 Switches to handwriting input
7 Enters a space
8 Changes the keyboard language
9 Switches to special characters