text.s = "Hello World!"
EnableASM
!extrn "__imp__MessageBoxW@16" as MessageBox:dword
push 0
mov eax, text
push eax
mov eax, text
push eax
push 0
call [MessageBox]
DisableASM
text = #Null$

; int MessageBox(
;   HWND    hWnd,
;   LPCTSTR lpText,
;   LPCTSTR lpCaption,
;   UINT    uType
; );