How do I enter the chord "B(add4)/G#"?

[John Zaitseff]

A very quick and simple question that has me stumped: How do I enter the 
chord "B(add4)/G#" in LilyPond's chord mode?  I am trying to transcribe 
that very chord in a song we have...

I am quite adept at using LilyPond, but my knowledge of music theory is 
virtually nil.  I would have thought "b:5.4/gis" would do the trick, but 
that gives "B(sus4/add3)/G#" as output---and I don't know if that is the 
same as "B(add4)/G#"!

Any help would be appreciated...

Yours truly,

John Zaitseff

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John Zaitseff                    ,--_|\    The ZAP Group
Phone:  +61 2 9643 7737         /      \   Sydney, Australia
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