showing alternative chordname

[bart deruyter]

Hi all, 

I got stuck here in a transcription of a folk tune. I'd like to show a possible alternative for a chord e.g.:

C(Gm7). It's written like this in the orignal, but I'm not sure if that's the correct way to describe a possible alternative for a chord, or how to achieve it.

if anyone has an idea...

thanks,

Bart

http://www.bartart3d.be/
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