Often, such a long output will consist of several sections then where a break between some of them would be okay whereas a break within a section would be undesireable. The new LL25 feature allows to handle exactly this situation.
As an example, I've adapted Jeff Atwood's Programmer's Bill Of Rights to be used in a table with free content. The table's line definitions look like this:
and the resulting output looks like this:
Note how the final block gets wrapped right after the header, even though the property "Keep Line Definitions Together" is set to true. The reason is simple – "Keep Line Definitions Together" refers to all lines. List & Label quickly realizes that there's not enough space to keep all lines together and wraps the line definition happily then. However – this is not what you really want here. It would be great to at least be able to keep the headings together with their (non-wrapped) paragraphs. To enable this, simply set the new property "Keep Line Definitions Together > Line Groups" to true. Next, assign a line group index – which is the second part of this new feature – to the lines, making sure the heading and paragraph get the same index:
This way you can select sections that should be kept together rather than the whole block that would never fit anyway. The result of course is then as expected:
This allows a much more flexible approach to the wrapping behavior in List & Label 25. It can also be used e.g. for lengthy invoice footers for keeping taxation information in a block while allowing other footers to float freely.