Chord Chart - no lines

[joeyc (sent by Nabble.com)]

This example from the docs does what I want... It prints a chord chart with just Bar Lines, and the chord symbols...  but I would like to modify it...

1.)  I would like to add a bar line at the beginning measure
2.)  How can I add more than one chord per measure
3.)  How would I add the measure repeat symbol

\new ChordNames \with { 
\override BarLine #?bar-size = #4 
voltaOnThisStaff = ##t 
\consists Bar_engraver 
\consists "Volta_engraver" 
} 
\repeat volta 2 \chordmode { 
f1:maj f:7 bes:7 
c:maj 
} \alternative { 
es e 
}

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