rosbag meta data

edit

Is there a way to extend the bag file format with a description field that explains how the data was achieved/recorded. Or at least a link to a document that gives this details. I was thinking of something like:

rosbag record /tf -m "this was recorded for IROS paper 2011 with <settings> active and female test person, more info in bag_specs.txt"

Or even a:

--detail-file="_bag_specs.txt"

Perhaps there is such a functionality that I'm not aware of? (and no I don't want to be putting this into a topic which is also recorded)