有段批处理不明白，请高手帮助看一下。
＠ECHO OFF
SET EXPAND=YES
SET DIRCMD=/N
SET LglDrv=27*26 Z 25 Y 24 X 23 W 22 V 21 U 20 T 19 S 18 R 17 Q 16 P 15
SET LglDrv=%LglDrv% O 14 N 13 M 12 L 11 K 10 J 9 18 H 7 G 6 F 5 E 4 D 3 C
CALL SETRAMD.BAT%LgiDrv%
SET TEMP=C:\
SET TMP=C:\
LH SMARTDRV.EXE 4096
COPY COMMAND.COM%RAMD%:\>NUL
COPY EXTRACT.EXE%RAMD%>NUL
COPY TASKMENU.BAT%RAMD%>NUL
%RAMD%:\EXTRACT/Y/E/L%RAMD%:EBD.CAB>NUL
SET COMSPEC=%RAMD%:\COMMAND.COM
PATH=%RAMD%:\;A\;%CDROM%:\
LH %RAMD%:\MSCDEX.EXE/D:MSCD001/L:%CDROM%
LH%RAMD%:\PDOS/NP
%RAMD%:\GHOST.BAT
那位朋友帮助一下。逐条解释一下，这些语句的用法，意思。谢了。
＠ECHO OFF
SET EXPAND=YES
SET DIRCMD=/N
SET LglDrv=27*26 Z 25 Y 24 X 23 W 22 V 21 U 20 T 19 S 18 R 17 Q 16 P 15
SET LglDrv=%LglDrv% O 14 N 13 M 12 L 11 K 10 J 9 18 H 7 G 6 F 5 E 4 D 3 C
CALL SETRAMD.BAT%LgiDrv%
SET TEMP=C:\
SET TMP=C:\
LH SMARTDRV.EXE 4096
COPY COMMAND.COM%RAMD%:\>NUL
COPY EXTRACT.EXE%RAMD%>NUL
COPY TASKMENU.BAT%RAMD%>NUL
%RAMD%:\EXTRACT/Y/E/L%RAMD%:EBD.CAB>NUL
SET COMSPEC=%RAMD%:\COMMAND.COM
PATH=%RAMD%:\;A\;%CDROM%:\
LH %RAMD%:\MSCDEX.EXE/D:MSCD001/L:%CDROM%
LH%RAMD%:\PDOS/NP
%RAMD%:\GHOST.BAT
那位朋友帮助一下。逐条解释一下，这些语句的用法，意思。谢了。
