It is impossible to include a format between two lines of a single format. For example, it is impossible to have the format sequence: AB AC AB. If one or several lines included in a format are selected to change the format, all the lines located under the selected lines and having the same original format are modified. Here is a table summarizing this principle: Line number Before modification Selection for modification After modification 1 AA AA 2 AA AA 3 AA YES AB 4 AA YES AB 5 AA AB 6 AA AB 7 BB BB Lines No. 5 and 6 are automatically modified. Click below for further information about: