Changing selected table using data section links and zoom icon Some tables contain the same information at different levels of detail. For example, table group n. 10 contains the number of municipalities by population size. Table 10 uses a "large mesh" classification, while tabb. 10a, 10b, 10c, 10d use more detailed classes. In this case, table 10 column headings can be used to select the more detailed tables. This kind of columns can be easily recognised because their headings are blue. Viceversa, when the current table is a detail table, it is possible to go to the summary table by clicking the zoom icon near the "Go to table index" button.