The job request cards used on the first 1905E service for the GEORGE 2 operating system required users to provide details of core store and mill time (cpu ) estimates as well as I/O details and any special disks or tapes required (pink card opposite). This allowed for manual scheduling of jobs by the Operators who could try and maximise usage and throughput by altering the job mix loaded into the system at any one time.

When the service moved to the ICL 1903T system under GEORGE 3 the operating system had various hooks to allow integration of a scheduling program ( the so called High Level Scheduler (HLS)). The UEA HLS was written to automatically schedule jobs according to machine resource requests punched on the first card of the job. Most users at that time were quite familiar with such concepts as job time(JT) , virtual program size (MZ) and even the working set (quota) of pages needed (MQ) for the job to run efficiently without generating large numbers of page turns to backing store. Hence the simplified job request card ( blue card opposite )- everything was machine readable on the first punched card of the job. The card colour in this case indicated the users priority w.r.t. charging and turnaround time ( blue for normal rate - JP N on the punched card).