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    can_read ( [ TIMEOUT ] )
        Return an array of handles that are ready for reading. "TIMEOU
+T" is
        the maximum amount of time to wait before returning an empty l
+ist,
        in seconds, possibly fractional. If "TIMEOUT" is not given and
+ any
        handles are registered then the call will block.

#!/usr/bin/perl
use IO::Select;
...
        }
    }
}