17 .\" This is designed so that \[ul], \[rn], and \[br] form corners.
18 .fchar \[br] \Z'\v'.25m'\D'R .04m -1m''
19 .fchar \[ru] \Z'\v'-.02m'\D'R .54m .04m''\h'.5m'
20 .fchar \[rn] \Z'\v'-.77m'\D'R .54m .04m''\h'.5m'
21 .fchar \[ul] \Z'\v'.23m'\D'R .54m .04m''\h'.5m'