[Eeglablist] integrate new markers with the old ones

[ivano triggiani]

Hello everyone,

I have files with EEG channels and markers (BrainVision system, so the
markers are called S1, S2), plus an extra channel with a photosensor (with
a square wave). I also need to mark the onset of the wave. I wrote a
function to identify the timing of the onset.
How can I integrate the "new" markers with the ones already in the file?

Thank you very much to anyone who can help me,

Ivano