the bug of use for 'more' for the file created with tcpdump

[" ． 嫒〆j々" <280860889 () qq com>]

Hello : 
    First I use tcpdump to wirite the information to a file . like this,'tcpdump host 192.168.1.198 -w a.txt'. Arter 
about three seconds,I press the 'CTRL+C".
    Second, I use the "more" to view the information about a.txt . But After   I press the 'CTRL+C".  The word int 
command window is like " [������├@┌������┌������├ ·]#   " .-
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