sentences:  Furthermore, RFB has claimed the type to be one-fifth as expensive to procure as the Cessna T-37 Tweet, a rival trainer, while delivering comparable performance (except for a slower top speed) at one-tenth of the fuel consumption.The design of the Fantrainer reportedly incorporates several features to increase effectiveness and reduce costs.Attention was also paid to ease of use, the engine is controlled via a single-lever power control with ground and flight idle stops, behaving much like a traditional turbojet unit; in general, both controls and instrumentation are clear and straightforward.