Can one low variable be used across multiple sites (using MSM)

Question

Can 1 low variable be created and used across multiple sites. Or would you have to copy the instance for each site?

Answer 1

You can, but you will have to use the Parse tag or one of its aliases:

{exp:low_variables:single var="my_site:my_var"}

Answer 2

I don't believe so. I think you'll have to create a new one on each site.