Problem with commands in DOS

I am trying to make modifications to the file system using dos - mods that cannot be done while the computer is booted into the OS.

I downloaded the MS-DOS 7.1 boot disk from here and I cannot get it to perform the following commands:

Choice

Move

I have checked the syntax a hundred times, but it still says bad command. How do I make them work? Every site that I look at says that the two are internal commands included with MS-DOS 6 and higher.