as much as you like ... you could add some more parameters (up to 9) or using the macro several times
\bArrow{One}{Two}\ blahhh \rnode{A}{uuuuuuuuhhhh}% node B is unchanged \ncbar[angle=-90,nodesep=1pt,linewidth=0.1pt]{->}{B}{A}
Thank you very much indeed, Herbert!
Paul
