A method for indirectly modifying a second set of data that is temporally related to a first set of data, wherein the first set of data is a text data set, comprising the steps of:
- modifying the first set of data in a predetermined manner to produce a modified first set of data;
- aligning the first set of data with the second set of data to establish a temporal correspondence between the first and second sets of data;
- and
- automatically modifying data from the second set of data that is aligned with data from the modified first set of data, in accordance with the modification of the first set of data, to produce the modified second set of data, wherein the step of automatically modifying data from the second set of data further comprises including in the modified second set of data all data from the second set of data except data which is aligned with data in the first set of data that is not included in the modified first set of data.