strings do match names, numbers, groups, rooms, accounts as follows:

item	matches string = item... or number = item (exact match)
item1,item2	matches item1 or item2
item1.item2	matches item1 and item2
item1 item2	matches item1 and item2

strings may contain (perl) regular expression syntax

	Example	Meaning
	W.Friebel	# W[...] Friebel
	meier,lehmann uni	# Meier or Lehmann in Uni
	'm[ae][iy]er'	# Meier or Mayer or ...
	'meyer H1|ATLAS'	# Meyer in groups ATLAS or H1