UEFI shell 中 bcfg命令求解？

[softhand2006]

找到的资料上是这么写的
Manages the boot and driver options that are stored in NVRAM.
bcfg driver|boot [dump [-v]] [add # file "desc"] [addp # file "desc"][addh # handle "desc"] [rm #] [mv # #] [-opt # [[filename]|["data"]] | [KeyData <ScanCode UnicodeChar>]]

其中
add
addh
addp
三个参数看不明白，三者有什么区别，希望有这方面经验的人给予解答。
add Add an option. The # is the number of options to add in hexadecimal. The file name of the UEFI application/driver for the option. The quoted parameter is the description of the option being added.

addh Add an option that refers to the driver specified by handle. The # is the number of options to add, in hexadecimal. The handle is the driver handle, in hexadecimal. The device path for the option is retrieved from the handle. The quoted parameter is the description of the option being added.

addp Add an option that refers to a specific file. Only the portion of the device path starting with the hard drive partition is placed in the option. The # is the number of options to add, in hexadecimal. The quoted parameter is the description of the option being added.