10. A method of outputting graphic data including text as claimed in claim 7, wherein the step of changing a text angle excludes any of the prescribed angular positions at which the text item is superimposed on an origin of any of the other text items.
7. A method of outputting graphic data including text comprising the steps of: extracting a text item superimposed on one or more other text items; measuring a frequency of superimposition of the text item on other text items for each of a prescribed number of angular positions of the superimposed text item; and changing an angle of the text item to one of the prescribed angular positions so as to minimize the frequency of superimposition of the text item on the other text items.