In order to access these actions you can click the column header and choose from the contextual menu the item:
You can sort the table by a specific column. The sorting can be either ascending or descending.
The icons for this pair of actions are:
The sorting result depends on the data type of the column content and it can be different in case of number (numerical sorting) or text information (alphabetical sorting). The editor analyses automatically the content and decides what type of sorting to apply. If there is present a mixed set of values in the column, a dialog will be displayed allowing to choose the desired type between numerical and alphabetical.