Understanding the structure

Hello,
Is there a way to undersatand the structure of (link to raw file)
image

for example what is this?


?
image

The structure of the "Link to raw file" is documented here:
https://neuroimage.usc.edu/brainstorm/Tutorials/EventMarkers#On_the_hard_drive

For the Header structure, this depends on the file format.
The CTF format is not officially documented, therefore you'd need to read directly the reading functions: