我在看SpatialExtremes这个R包的时候，有一句代码是，
nplk <- function(x) x
    body(nplk) <- parse(text = paste("-.C('schlatherfull', as.integer(cov.mod.num), as.double(data), as.double(dist), as.integer(n.site), as.integer(n.obs), as.integer(dist.dim), as.integer(weighted), as.double(weights),",
        paste("as.double(c(", paste(loc.names, collapse = ","),
            ")), "), paste("as.double(c(", paste(scale.names,
            collapse = ","), ")), "), paste("as.double(c(", paste(shape.names,
            collapse = ","), ")), "), "as.double(nugget), as.double(range), as.double(smooth), as.double(smooth2), fit.marge, dns = double(1), PACKAGE = 'SpatialExtremes')$dns"))

里面的-.C是调用C程序了吧？但是我直接在Command窗口里面键入-.C('schlatherfull')，程序就自动关闭了，这是怎么回事啊？
怎么查看他调用的C程序啊？
谢谢各位大大们帮忙了~