The claims may include tables if this is desirable in view of the subject-matter involved. In this case, the tables must be included in the text of the relevant claim; they may not be annexed to the claims nor may reference be made to tables contained in or annexed to the description. Rule 43(6) stipulates that the claims may refer to other application documents only where this is absolutely necessary (see F‑IV, 4.17). The mere desire to eliminate the need to prepare further copies does not constitute absolute necessity.[Rule 49(9); ]