To improve the visibility of a marker object of a plurality of strokes to be marked by a coordinates input device in the information processor.

An inputting means 2 has a display state of a graphic, a character or a locus and inputs a marker object for performing drawing at an instruction position of a pointer or a position of an approximation. A displaying means 1 displays a marker object. A measuring means 4 measures an elapsed time after inputting the marker object. A display changing means 5 changes a display state of brightness or the like of a line or plane constituting the marker object in accordance with the elapsed time measured by the measuring means 4. If the next marker object is input within a prescribed time after inputting the marker object during this change, the display changing means 5 makes a change in a display state according to the elapsed time of the prior marker object and the next marker object the same. This can improve the visibility of the marker object of a plurality of strokes to be marked.

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