A.0.3 Identifiers
A.0.3.1 Significant Characters Without External Linkage
Same as Microsoft C.
A.0.3.2 Significant Characters With External Linkage
Same as Microsoft C.
A.0.3.3 Uppercase and Lowercase
Same as Microsoft C, except that the __pascal options (/Gc and /Zc) do not apply because there is only one calling convention used for the Alpha AXP architecture on Windows NT.