Command option Sample:choice /M

Search command sample in the internet.It is the result.

choice /M オプション

choice /m "chose another name for your shortcut"
    Shortcuts that You Run in DOSBox - DOSBoxWiki : http://www.dosbox.com/wiki/Shortcuts_that_You_Run_in_DOSBox
CHOICE /M "Do yo really want to quit"
    Batch files - The CHOICE command : http://www.robvanderwoude.com/choice.php
Choice /M "Do you want to continue"
    Make the Choice command work for you even in Windows 7 - TechRepublic : http://www.techrepublic.com/blog/windows-and-office/make-the-choice-command-work-for-you-even-in-windows-7/

choice のオプション一覧