OSD: On Screen Display and 'forbidden' characters / symbols

Sometimes you run into the situation that you want to use a character in the On Screen Display (OSD) what is not allowed. An example of a character that is not allowed is,   ‘+’.

A workaround to get the  ‘+’ in the OSD, is adding the following sequence in the OSD: \uXXXX
Where XXXX is the hexadecimal code of the character.  
Example, for the character ‘+’ the sequence becomes \u002B

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In the ASCII table below, there are next to the column with ASCII codes, also
columns with Hexadecimal codes and the column with the characters.
Example (ASCII   Hex   Char):  043   2B   +  

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