Questions on TMDSIDDK_v1.0 (C2000 DesignDRIVE Develoment Kit for Industrial Motor Control)

in the source code of " IDDK_PM_Servo_F2837x.c ", what is the role of State Machine function prototypes?

I don't understand what they are doing in the code.

// State Machine function prototypes
//------------------------------------
// Alpha states
void A0(void); //state A0
void B0(void); //state B0
void C0(void); //state C0

// A branch states
void A1(void); //state A1
void A2(void); //state A2
void A3(void); //state A3

// B branch states
void B1(void); //state B1
void B2(void); //state B2
void B3(void); //state B3

// C branch states
void C1(void); //state C1
void C2(void); //state C2
void C3(void); //state C3

// Variable declarations
void (*Alpha_State_Ptr)(void); // Base States pointer
void (*A_Task_Ptr)(void); // State pointer A branch
void (*B_Task_Ptr)(void); // State pointer B branch
void (*C_Task_Ptr)(void); // State pointer C branch