mincconvert copies the input file to the output file,
possibly converting the file from MINC 1 to MINC 2 format, or vice versa.
With the -template flag, mincconvert creates a "template"
volume from the input MINC volume. The template volume preserves all of
the structure (dimensions, variables, and attributes) of the input MINC
volume but omits all data. Any attempt to read data will return zeroes.
The resulting file is typically much shorter than a normal MINC
volume, and may be useful for scripts which want to carry such
structural information forward into their output files. As a hint to
future programmers and users, this program places a special global
attribute in the file, with the name class and the value