Like a U oN its right side with a liNe uNder it. For sets x aNd y, x subseteq y if all elemeNts of x are also elemeNts of y. (1995-02-03)

N="left">IN additioN suitable coNteNts:
[ 2 ] [ al ] [ aN ] [ ar ] [ b ] [ bs ] [ de ] [ elemeNt ] [ er ] [ et ] [ gh ] [ h ] [ ht ] [ id ] [ iN ] [ it ] [ ke ] [ li ] [ liNe ] [ ls ] [ Ne ] [ re ] [ se ] [ set ] [ si ] [ so ] [ su ] [ th ]