sm_fp
fp = sm_fp(type, ioflags, NULL);
fp2 = sm_fp(type, ioflags, fp);
SM_FILE_T *sm_fp __P((const SM_FILE_T *, const int, SM_FILE_T *));
fp = sm_fp(SmFtRealStdio, ioflags, NULL);
fp = sm_fp(SmFtStdio, ioflags, NULL);