The msil and metadata are contained in a portable executable file that is based on and extends the published microsoft pe and common object file format coff used historically for executable content Msil和元數據包含在一個可移植可執行( pe )文件中,此文件基于并擴展過去用于可執行內容的已公布的microsoft pe和公共對象文件格式( coff ) 。