1. A recipe display method comprising: a step of accepting an execution instruction to cause execution of an arbitrary recipe of plural recipes that include at least a process recipe and a reset recipe; a first display step, in which the arbitrary recipe is displayed on an operation screen; and a determination step of determining whether the arbitrary recipe is the process recipe, wherein when the arbitrary recipe is the process recipe, the process recipe is executed and displayed, and when an execution instruction to cause another recipe to be executed is received during the execution of the process recipe, a second display step is performed in which the process recipe and the other recipe are displayed on the operation screen together with a factor which has generated the execution instruction to cause the other recipe to be executed, the factor being displayed between the process recipe and the other recipe, the second display step showing a status of a transition from the process recipe to the reset recipe, and wherein step information of the process recipe is displayed including number of times of execution of a step; wherein, when the arbitrary recipe is the reset recipe, the reset recipe is executed and displayed singly without executing the second display step, and wherein processing is performed according to the reset recipe to end in a secure state, and an end step is displayed.