A handwriting apparatus includes unit acquiring first-handwriting data, unit storing one-stroke-handwriting data and a first command as an instruction, the instruction corresponding to the one-stroke-handwriting data and being executed with a device, unit, when the first-handwriting data corresponds to one stroke, searching the storage unit for the first command corresponding to the one-stroke-handwriting data corresponding to the one stroke, unit planning to execute the first command when the corresponding first command is searched out from the storage unit, unit storing one-stroke-handwriting data and a second command as an instruction which corresponds to the one-stroke-handwriting data, the second command being different from the first command, unit regarding the first-handwriting data as one-stroke-handwriting data at time intervals and search the storage unit for the second command corresponding to the one-stroke-handwriting data, and unit, when the corresponding second command is searched out from the storage unit, planning to execute the corresponding second command.