Read Intermediate Geometries

By default, only converged geometries will be read in from a Gaussian log file or checkpoint file.  Intermediate geometries refers to steps taken during an optimization step prior to arriving at the converged structure.  When an optimization stumbles or fails, it can be helpful to read in these intemediate steps in order to help to diagnose where the problem may have occured.  Reading in intermediate geometries is primarily used for plain optimizations, but can also be used with relaxed scan and IRC jobs.  To read in all of the (intermediate and converged) geometry steps: