请帮忙看看这个批处理代码是什么意思？

Question

if "%1A" == "A" goto Info
if %1 == SYSID goto SYSID
if %1 == sysid goto SYSID
if %1 == INSID goto INSID
if %1 == insid goto INSID
goto Usage

:Info
echo System: \\%COMPUTERNAME%, Node: local, m/c: %PROCESSOR_ARCHITECTURE%
echo Operating system release:
ver
goto End

:SYSID
echo System: \\%COMPUTERNAME%, Node: local
echo Operating system release:
ver
goto End

:INSID
echo Machine hardware name: %PROCESSOR_IDENTIFIER%
goto End

:Usage
echo USAGE: %0, or %0 sysid, or %0 insid
goto End

:End