Fern's Graphics Lib is good idea, but I appended (enclosed(?))at the end of "getsys.prg" the next function:
Static Function CursBlink()
Local nKey:=0,nCur
While nKey==0
kes(1)
If SetCursor()==SC_NONE
SetCursor(if;(SET_SET_INSERT) ,SC_INSERT,SC_NORMAL))
Else
SetCursor(SC_NONE)
Endif
nKey:=Inkey()
End
Return(nKey)
and I inserted at the right place (in other function call) in "getsys.prg".
After this save file as: getsysbz.prg
Link with: BLINKER FI %1,getsysbz, etc....
The cursor is blinking.