The drawing file is the header the enhancement automatically places before inserting the lines of the actual line balloon table. It is structurally similar to the table’s line, except it does not contain enhancements, but texts which represent the label of the table’s value column. The user must modify this file following the steps previously described for the line balloon table. Each table loads the corresponding heading, tab0 loads tab0int, tab1 loads tab1int, so on so forth. If the file does not exist, the enhancement does not generate an error, but does not charge any heading.