| 摘要 |
PROBLEM TO BE SOLVED: To allow special identification information used in a specific case to be reliably identified as identification information.SOLUTION: Performance control means comprises: normal arrangement variable display execution means for executing variable display based on normal arrangement including non-special identification information; and special arrangement variable display execution means for executing variable display based on a special arrangement including special identification information excluded from the normal arrangement. The special arrangement variable display execution means lengthens a visible period of the special identification information as compared with that of identification information in execution of the variable display based on the normal arrangement. |
