另外请教245(i)和MTR for I-485是什么意思？

查到2个类似case，分别提到这两个词，不太明白：
My GC was approved on Friday '22;2005. Here are the details.
140 and 485 together : ND September'2003
140 AD : March'30th,2004
Used 245(i) for My wife and son.
485 RFE for employee letter on March 9th
Another RFE for 485(A) supliment form for my son and repplied and received on April'1st. Approved on April'22nd.

Our case is so complicated , we have used 245(i). My wife and son out of status for one year . I forgot to renew their H4 ..

(http://forums.immigration.com/showthread.php?172612-GC-approved.)

下面这个是最新的类似case:

http://murthyforum.atinfopop.com/4/OpenTopic?a=tpc&s=1024039761&f=9324055071&m=8361088502