To obtain the meta information stored in a sink file, the info_sink command can be used. It will list the meta data size, the sink size, the number of sinks, and the number of bytes written to each sink. It will issue a warning if sinks are unused.

info_sink  -sink_file data.sink

For debugging purposes, the -verbose flag allows to set the level of information printed to standard error. For level 0 there is no feedback, level ` provides run time information, higher levels may be added in future.

Help on the avaible command line options for this command can be obtained using the -? flag.