Printing index images and file information together

A non-transitory computer usable storage device having computer-readable instructions stored thereon that instruct a computer to execute an image forming process comprising the steps of:

• retrieving a plurality of pieces of index image data and a plurality of character strings from a recording medium connected to the computer, the recording medium storing a plurality of files respectively represented by the plurality of pieces of index image data and the character strings respectively relating to the plurality of files;
• counting, for each character string of the plurality of character strings, a number of all characters in the each character string;
• judging, for each character string of the plurality of character strings, whether the number of all characters in the each character string is greater than a predetermined number;
• allocating each piece of the plurality of pieces of index image data and the each character string of the plurality of character strings within a predetermined layout, the predetermined layout comprising a plurality of arrangement sections, and each arrangement section of the plurality of arrangement sections arranged next to another arrangement section of the plurality of arrangement sections and defined in a memory of the computer based on the judging;
• printing the plurality of pieces of index image data and the plurality of character strings on a printing sheet;
• modifying the predetermined layout based on a judgment result in the judging step;
• wherein, when it is judged that the number of all characters in the each character string is less than or equal to the predetermined number, in the allocating step, allocating the index image data relating to the each character string to a first area comprised in one of the plurality of arrangement sections and allocating the all characters in the each character string to a second area comprised in the one of the plurality of arrangement sections,
• wherein, when it is judged that the number of all characters in the each character string is greater than the predetermined number, in the modifying step, expanding the second area without expanding the first area and changing a position of an arrangement section that is arranged next to the arrangement section comprising the expanded second area, and, in the allocating step, allocating the index image data relating to the each character string to the first area and allocating the all characters in the each character string to the expanded second area, and
• wherein, in the printing step, printing the plurality of pieces of index image data allocated to the first area comprised in an unchanged arrangement section and the changed arrangement section, all characters allocated to the non-expanded second area, and all characters allocated to the expanded second area on one printing sheet.