maintenance of class

"Dr. Petee's lack of course records for some classes violates Auburn University policy on proper maintenance of class documents and records," the report stated.

Additionally Siemens undertook maintenance of Class 444 and Class 450 on site, and Network Rail MPVs were stored on site.

But where the lessons of the trial seem straightforward enough - social order in the colonies depends on a mercilessly strict maintenance of class, race and gender hierarchies - the movie is anything but.