Beyonwiz DP-S1 - Manual (Page 31)

Quick Setup
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On-screen keyboard: If you need to input alphabetic characters, an
on-screen keyboard will be displayed. You can move the cursor with
the UP/DOWN/LEFT/RIGHT buttons and select the letters with the
OK button. The YELLOW and BLUE buttons work as a space and
backspace keys respectively. You can also clear your inputs by
selecting “Clear All” with the OK button on the screen.
If you need to input upper case characters, please press the RED
button. The screen keyboard will changed to upper case characters
and you can input the same way. You can return to lower case
characters with the RED button.
If you need to input numbers, please use the NUMERIC buttons on
the RCU.
If you need to input special characters, please press the GREEN
button. The screen keyboard turns to special characters. You can also
exit and return to small characters with the GREEN button.
After the input, you can save it by selecting “Save & Exit” with the
OK button. If you do not want to save, please press the EXIT button.