我想使用renvars指令，但是findit renvars之后点击dm88_1.pkg这个地址，进去之后显示
package name:  dm88_1.pkg
        from:  http://www.stata-journal.com/software/sj5-4/
checking dm88_1 consistency and verifying not already installed...
all files already exist and are up to date.
这个应该怎么办啊，求大神解答！谢谢了！