what is "WINAPI" and "void far"? why we need them?

Question

I confront with this type and I can not find understandable text for it.

follow code:
DWORD WINAPI foo (LPVOID lpram) ; //???

i traced them:
typedef unsigned long DWORD; //it's OK!

typedef void far *LPVOID; // i can't understand.

#define WINAPI __stdcall // :-|
#define APIENRTY WINAPI // :-0

Answer 1

I don't need them.