[Wiggo]

Once again I can't get it right.

I bought the ePub for a old paperbook and now I want to have both symbols for #format and #quelle (=source) displayed in the column.
Instead, unfortunately, none is displayed at all.
Generally asked, how are multiple entries of a column displayed?

program:
		def add_icon(icon, val):
		if icon == '' then icon = val else icon = icon & ':' & val fi;
		return icon
	fed;

	icon = '';
	if $languages == 'eng' then icon = add_icon(icon, 'uk.png') fi;
	icon = add_icon(
		icon, 
		switch(
			$$#toread,
			'true', 'toread.png',
			'false', 'false.png',
			''));
# $$ ist raw_field()
	
	if $$#formats == 'paper' then icon = add_icon(icon, 'paper.png') fi;
	if $$#formats == 'epub' then icon = add_icon(icon, 'epub.png') fi;
	if $$#formats == 'pdf' then icon = add_icon(icon, 'pdf.png') fi;
	if $$#read == 'true' then icon = add_icon(icon, 'ok.png') fi;
	if $$#quelle == 'geniallokal' then icon = add_icon(icon, 'geniallokal.png') fi;
	if $$#quelle == 'wbg' then icon = add_icon(icon, 'wbg.png') fi;
	if $$#quelle == 'RKH' then icon = add_icon(icon, 'rkh.png') fi;
	if $$#readinglist != '' then icon = add_icon(icon, 'reading_list.png') fi;
	if $$#annots != 'NONE' then icon = add_icon(icon, 'annotations.png') fi;
	return icon