usr/src/usr.bin/tn3270/api/apilib.h

/*
 * What one needs to specify
 *
 * @(#)apilib.h 1.2 (Berkeley) %G%
 */

extern int
    api_sup_errno,                      /* Supervisor error number */
    api_sup_fcn_id,                     /* Supervisor function id (0x12) */
    api_fcn_errno,                      /* Function error number */
    api_fcn_fcn_id;                     /* Function ID (0x6b, etc.) */