Panasonic LP-310 Operation Manual page 108

<Setting Method and Sample of Period>
The sample of the period setting method is shown as follows.
1. In case of selecting year, month, day, hour, or week for the period condition:
Input the period into the input field within the setting range of each period condition in single-byte character.
Input the character string to be marked into the input field of "Marking Characters" within 10 letters.
(Input the character in double-byte for Japanese OS and in single-byte for English OS.)
2. In case of selecting Y/M (year-month) or M/D (month-day) for the period condition:
Input the period into the input field within the setting range of each period condition in single-byte character.
Input the character string to be marked into the input field of the marking character string within 10 letters.
(Input the character in double-byte for Japanese OS and in single-byte for English OS.)
108
<Sample with the period condition "M (month)">
<Sample with the period condition "Y/M (year-month)">