I have heard ATC use the phrase "Cleared for the takeoff option, Runway 27" many times at my local airport for the purpose of training. The original requests sound something like: " XXX Tower, Twin Cessna XXXXX holding short of runway 27, requesting the takeoff option". This was common practice here until about a year or two ago. They will no longer issue a "takeoff option" clearance. However, the training is still accomplished by stating that the "takeoff will be aborted". For instance, "XXX Tower, Twin Cessna XXXXX holding short of runway 27, ready for takeoff. This will be an aborted takeoff." Or something similar to that. I think the main reason is so ATC has clear knowledge of the intentions of the departing aircraft in order to maintain proper spacing.