</span></div><div  class = 'S4'><span>To build all the necessary mex-files, simply run </span><span style=' font-family: monospace;'>install_mex</span><span>.</span></div><h2  class = 'S7' id = 'H_655654D6' ><span>Optional software</span></h2><div  class = 'S4'><span>This section describes the optional software that can be used in  OMEGA, but which are not required for any of the core functions.</span></div><div  class = 'S4'><span>If you wish to use NIfTI data or save data as NIfTI format, on MATLAB you’