Thanks for the suggestion... we're always excited to hear about potential improvements.
Nevertheless we'd ask you to confirm whether you're using the latest version of OpenSignals available here:http://www.bitalino.com/index.php/software
If you open for example the TXT file on a standard text reader (e.g. Notepad), you'll see header lines (starting by #) with a fair amount of information in a human-readable format.
We have included sampling rate, resolution of each column, channel number, the channel labels (as defined in OpenSignals), units (if selected on OpenSignals), etc.
Double check it and let us know what you think
The BITalino Team