Open forum: Inputs requested by referees

Reinhard Agerer^*, Joe Ammirati, Timothy J. Baroni, Paul Blanz, Régis Courtecuisse, Dennis E. Desjardin, Walter Gams, Nils Hallenberg, Roy Halling, David L. Hawksworth, Egon Horak, Richard P. Korf, Greg M. Mueller, Franz Oberwinkler, Gerhard Rambold, Richard C. Summerbell, Dagmar Triebel, Roy Watling