import hgrtile
    predef tileDraw(x, y, tileptr)#0
    predef tileXorDraw(x, y, tileptr)#0
    predef tileOrDraw(x, y, tileptr)#0
    predef tileAndDraw(x, y, tileptr)#0
    predef tileDrawStr(x, y, strptr, strlen, tileset)#0
    predef tileFromText(txtpage, tileset)#0
    predef tileMode(mode)#1
    predef tileClear#0
    predef tileShow(page)#1
    predef tileSwap#1
    predef tileDrawBuf(page)#1
end
