. "song09". "song09(t)". . . "chs2". "chs2(t)*chase(t, names=back, ontime=1, offset=.08, random=1)". . . "chs1". "chs1(t)*chase(t, names=colors, ontime=.3, offset=.1)". . . "full". "full(t)". . . "t1". "t1(t)". . . . . . .