Hi, all.
Can mri_threshold  threshold an input mutli-volume file? With a seven volumes NIFTI file, all voxels other than in the first volume are set to zero. In addition, the help for mri_threshold options is very limited. There is nothing about the options.

Usage: mri_threshold [options] <in vol> <thresh> <out_vol>
This program will threshold an input volume

Where do I get more detailed  description?
Best Regards.