afni.nimh.nih.gov

You could put "history" as a comment note in the NIFTI dataset with :

3dinfo -history func_slim+orig. > funchist.txt
nifti_tool -add_comment "file:funchist.txt" -overwrite -infiles func_slim.nii.gz

This kind of history won't get updated or copied by AFNI in later processing steps.