\version "2.8.0"

\relative
{
	\time 4/4

	\repeat volta 2
	{
		\once \override Score.RehearsalMark #'self-alignment-X = #right 
		a1 \mark \markup { "Markup" }  |
	  
	}
	\alternative
	{
		{
			a |
		}
		{
			a |
		}
	}
	
	\break
	
	\repeat volta 2
	{
		\override Score.RehearsalMark #'self-alignment-X = #right
		a \mark \markup { "Markup" }  |
	}
	\alternative
	{
		{
			a |
		}
		{
			a |
		}
	}
}