will skip lines that begin with a "{" character. This is to prevent it from matching lines that only contain a single word or character with a fancy effect applied to it (usually karaoke effects). Here is an example (in this case each character changes color and rotates):
Code:
...
Dialogue: 0,0:00:05.96,0:00:07.46,OP,,0000,0000,0000,,{\fad(0,300)\pos(297,380)\t(300,400,\fscy80)\t(400,500,\fscy120)\t(500,600,\fscy100)}曖
Dialogue: 0,0:00:05.96,0:00:07.46,OP,,0000,0000,0000,,{\fad(0,300)\pos(321,380)\t(600,700,\fscy80)\t(700,800,\fscy120)\t(800,900,\fscy100)}昧
Dialogue: 0,0:00:05.96,0:00:07.46,OP,,0000,0000,0000,,{\fad(0,300)\pos(345,380)\t(900,1000,\fscy80)\t(1000,1100,\fscy120)\t(1100,1200,\fscy100)}3
Dialogue: 0,0:00:05.96,0:00:07.46,OP,,0000,0000,0000,,{\fad(0,300)\pos(389,380)\t(1200,1300,\fscy80)\t(1300,1400,\fscy120)\t(1400,1500,\fscy100)}センチ
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(0,125,\fscy125)\t(125,250,\fscy100)\pos(249,370)\an5\1a&HFFFFFF&\t(0,100,\fry360\1a&H000000&)}そ
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(100,225,\fscy125)\t(225,350,\fscy100)\pos(271,370)\an5\1a&HFFFFFF&\t(100,180,\fry360\1a&H000000&)}り
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(180,305,\fscy125)\t(305,430,\fscy100)\pos(293,370)\an5\1a&HFFFFFF&\t(180,270,\fry360\1a&H000000&)}ゃ
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(270,395,\fscy125)\t(395,520,\fscy100)\pos(315,370)\an5\1a&HFFFFFF&\t(270,360,\fry360\1a&H000000&)}ぷ
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(360,485,\fscy125)\t(485,610,\fscy100)\pos(337,370)\an5\1a&HFFFFFF&\t(360,450,\fry360\1a&H000000&)}に
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(450,575,\fscy125)\t(575,700,\fscy100)\pos(359,370)\an5\1a&HFFFFFF&\t(450,500,\fry360\1a&H000000&)}っ
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(500,625,\fscy125)\t(625,750,\fscy100)\pos(381,370)\an5\1a&HFFFFFF&\t(500,600,\fry360\1a&H000000&)}て
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(600,725,\fscy125)\t(725,850,\fscy100)\pos(403,370)\an5\1a&HFFFFFF&\t(600,700,\fry360\1a&H000000&)}コ
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(700,825,\fscy125)\t(825,950,\fscy100)\pos(425,370)\an5\1a&HFFFFFF&\t(700,800,\fry360\1a&H000000&)}ト
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(800,925,\fscy125)\t(925,1050,\fscy100)\pos(447,370)\an5\1a&HFFFFFF&\t(800,900,\fry360\1a&H000000&)}か
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(900,1025,\fscy125)\t(1025,1150,\fscy100)\pos(469,370)\an5\1a&HFFFFFF&\t(900,1000,\fry360\1a&H000000&)}い
Dialogue: 0,0:00:07.46,0:00:08.56,OP,,0000,0000,0000,,{\fad(10,150)\fsc90\t(1000,1125,\fscy125)\t(1125,1250,\fscy100)\pos(491,370)\an5\1a&HFFFFFF&\t(1000,1100,\fry360\1a&H000000&)}?
...
If you really want to see these lines, convert the subtitle file to .srt format.