[dirtymac]

What is ‘DMs’?

And is it so difficult to spell out what you are trying to say.
Literary and contract rules require that the first time usage is spelled out with initials put in parentheses.

[TangoLimaSierra]

What is ‘DMs’?
And is it so difficult to spell out what you are trying to say.

You are probably the only one who doesn't know what a DM is.

Also a quick search of DM would have instantly told you. Grow up.