Recently, I have dived into GCC Binutils nm documentation. I read the description of the symbols' classification and don't understand the differences between n and R (or r) symbols. As the manual says:
for n
The symbol is in the read-only data section.
R or r
The symbol is in a read only data section.
So instead of a we have the and instead of - we have space separating two words... It is also quite tricky for google - it seems to me that google is not paying much attention to the presence of -.