Open Ups <anything>

This is analogous to Trans <anything>. Open Up and Nothing, centers Cast Off 3/4, and then do the <anything>.

\syhlines{b4e,g4e,b1e,g1e} \sxvlines{b1w,g1e,g4w,b4e}
4 2 4 2 1 3 1 3 1 3 1 3 4 2 4 2
before Open Ups Nuclear Reaction after