What is the distinction between OUTMOD0 and OUTMOD_0?

In the MSP430G2553.h there are these definitions for the timer:

#define OUTMOD2                (0x0080)       /* Output mode 2 */
#define OUTMOD1                (0x0040)       /* Output mode 1 */
#define OUTMOD0                (0x0020)       /* Output mode 0 */

and

#define OUTMOD_0               (0*0x20u)      /* PWM output mode: 0 - output only */
#define OUTMOD_1               (1*0x20u)      /* PWM output mode: 1 - set */
#define OUTMOD_2               (2*0x20u)      /* PWM output mode: 2 - PWM toggle/reset */
#define OUTMOD_3               (3*0x20u)      /* PWM output mode: 3 - PWM set/reset */