As used in this division, unless the context otherwise requires: (1) "These rules" means the rules in this division. (2) "Base term" is the determinate or indeterminate sentence imposed for the commission of a crime, not including any enhancements that carry an additional term of imprisonment. (3) When a person is convicted of two or more felonies, the "principal term" is the greatest determinate term of imprisonment imposed by the court for any of the crimes, including any term imposed for applicable