To get help on a batch file command you can use the built-in help.
Open a command prompt (whose executable is
cmd.exe) and enter
help to see all available commands.
To get help for any of these commands, type
help followed by the name of the command.
Provides help information for Windows commands. HELP [command] command - displays help information on that command.
Some commands will also display help if followed by
Help will only display the help for internal commands.