Sent that earlier but seems like it didn't post. Sorry if it's a second posting.

Hi Freesurfers,

I would like to be able to regress out specific time points from my functionals using FSfast. I thought I should do it with the -extreg option to mkanalysis-sess but I don't know how to create the required extregstem_000.bfloat file.
How can I create this file?

Thanks,
Max