assert(RCString("abc") <= "abc");
assert(RCString("abc") >= "abc");
assert(RCString("abc") > "Abc");
assert(RCString("Abc") < "abc");
assert(RCString("abc") < "abd");
assert(RCString("abc") > "");
assert(RCString("") <= "");
assert(RCString("") >= "");