3. The apparatus for logically processing a composite graph in a formatted document according to claim 2 , wherein the computer-executable instructions, when being executed by the computer processor, further cause the computer processor to: add a corresponding logic label to each element in the composite graph block, to symbolize the classification each element belonging to; and store one or both of the logic label and an identification of the element corresponding to the logic label.
2. The apparatus for logically processing a composite graph in a formatted document according to claim 1 , wherein the computer-executable instructions, when being executed by the computer processor, further cause the computer processor to: obtain characteristic attribute information of the composite graph block; classify an element included in the composite graph block, according to the characteristic attribute information; and reserve an in-text-illustration composite graph in the composite graph block and filter other elements according to classification result, so as to detect the correlativity between the reserved in-text-illustration composite graph and the cutline element.