XOR function for certain letters

Hello!
Please, if we have
A1=h;
ascii(DEC)=72;
B1=G;
ASCII(dec)=103;
R1=/;
ASCII(dec)=47

and

A2=U;
ASCII=117;
B2=E;
ASCII(dec)=101;
R2=DLE;
ASCII(DEC)=16;

if R1= result of the operation A[1[ XOR B2
R2= result of the operation A2 XOR B2
WHAT IS then the operation XOR and what is it doing?

many thanks!

One of the most confusing questions I have ever seen… Can you please post a sample file or something and remove as much of non important details as possible.

Details on the XOR operator can be found here. Also, please phrase your questions more clearly. Your example has numerous mistakes.