capt_get_packet(): check for key press only every 20ms
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78 > Older versions of IPTraf updated the screen as soon as a
79 packet was received. However, screen update is one
80 of the slowest operations the program performs. Since version 1.3, a
81 configuration option has been available to control screen update speed.</P
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83 > See the <I
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85 >Screen update interval...</I
86 > configuration option under the
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90 > chapter of this manual.</P
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