$ gtf 540 960 60 -v
 1: [H PIXELS RND]             :      544.000000
 2: [V LINES RND]              :      960.000000
 3: [V FIELD RATE RQD]         :       60.000000
 4: [TOP MARGIN (LINES)]       :        0.000000
 5: [BOT MARGIN (LINES)]       :        0.000000
 6: [INTERLACE]                :        0.000000
 7: [H PERIOD EST]             :       16.770725
 8: [V SYNC+BP]                :       33.000000
 9: [V BACK PORCH]             :       30.000000
10: [TOTAL V LINES]            :      994.000000
11: [V FIELD RATE EST]         :       59.987640
12: [H PERIOD]                 :       16.767271
13: [V FIELD RATE]             :       59.999996
14: [V FRAME RATE]             :       59.999996
15: [LEFT MARGIN (PIXELS)]     :        0.000000
16: [RIGHT MARGIN (PIXELS)]    :        0.000000
17: [TOTAL ACTIVE PIXELS]      :      544.000000
18: [IDEAL DUTY CYCLE]         :       24.969818
19: [H BLANK (PIXELS)]         :      176.000000
20: [TOTAL PIXELS]             :      720.000000
21: [PIXEL FREQ]               :       42.940800
22: [H FREQ]                   :       59.639996
17: [H SYNC (PIXELS)]          :       56.000000
18: [H FRONT PORCH (PIXELS)]   :       32.000000
36: [V ODD FRONT PORCH(LINES)] :        1.000000

  # 544x960 @ 60.00 Hz (GTF) hsync: 59.64 kHz; pclk: 42.94 MHz
  Modeline "544x960_60.00"  42.94  544 576 632 720  960 961 964 994  -HSync +Vsync