$(list_courses | while IFS=/ read course coursename; do
printf '[label [checkbox "filter_course%i" "|%s" %s] %s ] ' \
"$n" "$(HTML "${course##*/}")" \
$(list_courses | while IFS=/ read course coursename; do
printf '[label [checkbox "filter_course%i" "|%s" %s] %s ] ' \
"$n" "$(HTML "${course##*/}")" \