大神们帮我看看这是怎么回事？

2012cdm999

reg add "HKCR\Directory\background\shell\killexplorer" /f /ve /t REG_SZ /d "刷新Explorer"
reg add "HKCR\Directory\background\shell\killexplorer" /f /v "Icon" /t REG_SZ /d "%%windir%%\System32\SHELL32.dll,238"
reg add "HKCR\Directory\background\shell\killexplorer" /f /v "Position" /t REG_SZ /d "Top"
reg add "HKCR\Directory\background\shell\killexplorer\Command" /f /ve /t REG_SZ /d "pecmd.exe KILL EXPLORER.EXE"
PE下用的。