Close an OPENED folder or programs!!

[jamesfui]

hi everyone!
i learned how to open folders and programs, but how do you close them AFTER
some time(seconds) delay??

start /max "" "c:\document\folder"

delay 5 seconds then close this folder!!! <- how do we do that?
same with opened programs too!!

thanks !!

[avery_larry]

You could try to figure out the "taskkill" command.